There isn't a whole lot to do about it - she's a kitten! I don't know how much of it has to do with the fact she was feral. All of our kitties are feral rescues - and while they were crazy and full of energy, they were totally uninterested in the TV, the computer, and the fish. So part of it is just personality.
That said - other than helping her to use up all that kitten energy, there isn't a whole lot you can do. We always had a really intense hour of play before we went to bed, and eventually they fell into our routine.
I don't know what you mean about curling up inside the toilet paper bag - but cats LOVE bags and boxes. Plastic shouldn't be left out for them to access. But paper bags left around for her to play in, or boxes left around for her to play in and with are always great. We make large and complex kitty condos and mazes out of boxes we tape together and cut holes in. We're constantly changing the placement and configuration - keeps them interested.
Also, don't leave all her toys out at one time. Just have a few out, and rotate them every week or so. They get bored pretty easily.
Taking a kleenex box and dropping a ping pong ball or something in it can provide lots of entertainment while kitty tries to get it out.
Cat Dancer http://www.catdancer.com/products.htm
makes lots of great toys that keep kitty entertained - the "Cat Dancer Compleat" (sticks on a wall) ALL of our kitties (when they were kitties) went nuts for.
This toy - which you can play with kitty with or which they can play with by themselves - absorbed hours of time: http://www.cat-alog.com/pump_run.html
All of that aside - if you don't want kitty on the computer desk/table, you need to start teaching her that. To do this, blow a short, sharp puff of air directly in her face and say "NO" firmly and set her down. Just keep doing it. Some catch on quickly and stop it. Others catch on quickly and don't care that you don't want them there. Some it takes a while to figure out. It can be a battle of wills - just like with a 2 year old baby.
Persistence and consistency on your part WILL win out. Kitty WILL learn what "NO" means. But right now, think of your kitten as about a 2 year old baby. Into everything, probably pretty much understands what you're communicating (at least the tone of it!) - but not necessarily willing to listen, but definitely pushing boundaries.
Chewing the cables has got to be discouraged. The best way to do this is with bitter apple, sold at most pet stores. You can try just putting this on the cables, and it may work. If it doesn't, I hate to say it, but you have to spray a little in her mouth. She will hate you for a while - but she will stop biting those cables you sprayed with it.
Make sure you have lots of scratching posts, or cardboard scratchers, or mat scratchers - plenty of appropriate places to scratch. It won't be a big thing with her at 10 weeks, but it's going to be an issue, so best to make sure she's got what to scratch on to begin with.
Also, she'll start to teethe around 3 or 4 months. When you notice she's lost a tooth or you notice she's starting to become very "bitey," buy a box of bendy straws and scatter them all over your home. She's got to have what to chew, or she'll go for your hands and ankles - and people are not toys, and she'll have to learn that.
Also, REALLY important, is positive reinforcement. Just as it's important that she understand what you don't want her to do, it's important she understand what you want her to do.
When she's playing with her toys, praise her to high heaven - even if it's with an interactive toy you're waving around for her. If she jumps up to swat at the computer screen, and you blow in her face and set her down - if she walks away or stays down, tell her WHAT a GOOD girl she is!
Most importantly - when you think you're losing your mind, just remind yourself that this time next year you'll be wondering what happened to all those crazy antics that - in retrospect - were so entertaining.