Okay so in the past I know I've told people on here how Neka has some pica problems like eating carpet, chewing on metal and wires...
That is the Serval/wild influence in her. It is not actually a "problem". It is a problem to us 
, but it is just part of owning a Savannah. If I remember correctly, she is an F5? It does not seem to matter that much, regarding the pica issues. Since, from what I have seen and heard, these type of behaviors CAN BE more exaggerated in higher generation/foundation cats (F1-F3), but that sure is not always the case.
How old is Neka? The older the cat gets, the better the pica issues tend to get. Note the term is better, not gone. Even my crazy F3 Loki, has calmed down with the pica, somewhat with age.
Neka was born in march, so she's getting close to a year old, at the moment she's 10 months.
That is still VERY young in the mind of the Savannah 
. She still has plenty of time to "mature" 
.
Well within the past couple of days I've seen her treating litter like prey.
That can be due to several factors, such as boredom. Do not take that the wrong way, these cats are so active, they bore very very easy. They do not seem to understand that people need to work, have lives, and such things. Even if they do understand, they do not care . It could also be due to the fact the litter box moves and makes noise. It just might be her own personal quirk.
Oddly enough she does it right after I'm done petting her, it's like she's all worked up and must find something to do with her paws lol
That is actually not that "odd" at all. You are most likely, in the eyes of Neka, her "mother/leader", So, just as a domestic kitten would be taught to hunt, from the mother, a Savannah will have the same instincts. Just highly magnified. In other words, after you pet her, she gets "excited" and "feels the need to show momma she can kill something".
Not the litter in the litter box, she doesn't just go in and eat tons of it.
That is good, very very good .
Yes, I would agree, otherwise I likely would have to have her stomach pumped or something.
No it's the stuff she drags around between her toes or whatever. I've unfortunately found quite a few litter pieces on my bed because she jumps up there after she's done using the litter box or whatever.
I am confused (yes no surprise ). Is she eating the pieces that she is grooming from between her toes? Or is she eating the pieces she finds on your bed/floor?
Well when she's grooming herself those pieces fall off, so I'd say both. Because she could possibly eat them when she's grooming, but it's mostly bed/floor and that's usually when she's playing.
I would not worry about it. But, you could simply keep a toy next to you. So that way, she can play with that and will hopefully get distracted by the litter.
She's a clean cat and grooms herself often but I guess the little pieces will stick to her paws every now and then.
That is a "problem" I have with both my Savannah and my other domestics.
Hopefully the new cat litter won't stick as much.
Problem is when the litter is on the bed and she moves - the comforter moves, and then the litter moves. When she sees the litter moves, she notices the movement and thinks it's 'alive' and then she cat help but bat at it which makes it move more and then she eats it... 
A very very normal "Savannahism", aka, a very common "quirk" of the breed. Loki, did grow out of that behavior at around a year old. He is now a year and a half.
Anyway so called my vet to make sure she didn't have anything wrong with her from eating the litter (both because it's clay based and because I read that cats only eat litter if somethings wrong with them...)
What a hybrid exotic does (Bengal, Savannah, Chausie, and a Safari) is VERY different then what a domestic cat does. The pica is very common. It is normally not an indication of an illness. Especially, in a cat under two years old. Now, if the cat is older and suddenly starts doing it (after stopping), then it might be a problem.
I just read about the anemia and then what that could mean and all sorts of horrible stuff. As she's acting fine I'd think she's fine... hopefully.
Pica in hybrid cats (Bengal, Chausie, Savannah and Safari), especially ones under two years old, is NOT a sign of anemia, in most cases. It is just the "wild cat" in them.
Since she's still acting normally and eating, and pooing, they think she's fine.
I agree, she sounds fine to me too 
.
Recommended for me to switch to Worlds Best Cat litter as it's corn based and more easily digestible if she decides she wants to eat that as well...
BE VERY CAREFUL WHEN CHANGING LITTER TYPE. If you really want to change the litter type, do it VERY SLOWLY. Unlike a pure domestic cat, her using the litter box is a "learned" or imitated behavior, from the domestic female she was likely raised with.
From reading up on that product I'm okay with that and will be getting that...
Question's I have:
A) Should I use the same litter box?
In my humble opinion, YES! Also, do not change the box location, at first!
Darn it! I already bought a new one and changed it before I had to go someone for two hours. I don't change the location, but yea already new litter box and litter.
How is she reacting to the change of litter and litter box?
Or should i change litter boxes when I get the new cat litter?
NOT to start with. If you decide you want to later on, then yes.
Like I said already changed litter boxes... I am a bit worried that she won't use it... I put her in and she was smelling it and everything (new box+new litter) she was curious but I don't know if she's gone in it yet. On the plus side I do know that she hasn't gone elsewhere in my room.
I would recommend, you either gradually change over the litter (mixing the old type with the new type) or put the old litter box and old litter type next to the new one. If she has used the new litter and new litter box, do not worry. Be very very grateful!
B) From all the dragging around she's done of the old cat litter - it's really not that noticeable but i'm sure there's little tiny pieces of litter all over the room on the floor that the vacuum cleaner hasn't picked up. Any idea's on how to pick up the left overs so she doesn't decide to eat them?
I am sorry, but I have no suggestions. I would try not to worry about it too much. Unless, she is licking the floor, looking for the litter. Then I might worry.
My grandma's suggested trying to sweep it off the carpet onto a hard floor, so I'm going to try sweeping that area of the room into the bathroom which is just across the hall. I've also thought of potentially using boxing tape in areas where I step and I feel the little grains.
And also to make sure my room's cleaner? I can't easily see it but my feet can sometimes feel it - so they must be really tiny grains of it...
I vacuum my whole home, on a daily basis. I can not give you any other recommendation, sorry :(.
Any suggestions would be appreciated. :)
I hope that was somewhat helpful. Please let me know!
It was helpful as always, glad you're always looking out for me =))
Glad you think I am so helpful 
. Let me know what you think of my responses.
