As far as I know, the credit stipend we receive for subscribing can only be used for wardrobe/vanity stuff. Personally, I love my Glitch the way she is and don't really care about changing her outfit or look all the time (or, really, ever. I like having a solid visual identity!), so I have spent almost nothing and it just sits in a stockpile.
A) am I mistaken and there are other things to use these credits for?
2) what else would you like to see credits used for?
EDIT: we can buy teleportation tokens w/ credits @ 2 credits per token.