Eye goobers.... I think

And watery eyes. The eye goobers look like sleep in a humans eye. I am hoping little Walter doesn't know how to clean his eyes and for what ever reason... the sisters stopped cleaning them/him as they were.
None have been outside. No other kitten have eye issues. (CLICK for a bigger/clearer photo)

I wiped them down last night and today.

And I go buy a tree and here the turkey bird loves a box.

Keep watch on that - he may have the beginnings of an upper respiratory infection.  If the goop gets yellow/green and he begins to sneeze, he'll need an antibiotic.  He's a cutie!

I agree.  I think he's coming down with an upper respiratory infection or an eye infection.  I'd get him to the vet just to be proactive and get ahead of the curve.

What causes this? He is an indoor cat.... my last "set" of cats never had anyrhing like this.

One never knows, really.  You may bring something in on a show or the wind may carry something in through a screen door.  The important thing is to attend to it quickly.

Stress can cause a breakout of an URI.  Is he in a new environment?  How long have you had him?

We have had him going on 3 weeks. Nothing has changed. Food and litter the same.

We are heading into monsoon season... Dust and rain storms. So far nothing...

Unfortunately, it's very, very, very common for kitties to develop upper respiratory infections about 7-10 days or so of being in their new environment.  Usually, it's from all the stress associated with a new place, new humans, new sounds, new routine, new smells and new territory.  So even though his food and litter haven't changed, everything else has and that is likely the trigger.  Also, with seasonal weather changes, that can also bring them on.  Kittens are very fragile and can go downhill very rapidly, so get him to the vet for a check up and some eye meds or an antibiotic.