Yep, it's official... I own too much devwear.

So these are
almost all the shirts by dA I own... and my camera bag. Not shown are the camera straps, and my Fella plushie, which my cat ripped to shreds the other day. You're in a better place now, Fella.

Not shown either is
Chinese Lion, which is in the laundry.

For the sake of completion, here is a thumb of me wearing it:

I also own both stress ball series, both keychains, both lanyards and all stickers but the trollface pack.

It took me a long time to find all the links, as most of the shirts have sold out, but here they are:
Row 1:
DB_09 by Adrenn,
Llama Llama,
There's No Place Like Groups - given to +
groups alpha testers only,
deviousARTIST,
Green Before it Was Cool,
deviantWORLD,
Fire Power,
Transform Row 2:
Street,
Artists United - Black,
Quit Work, Be a Ninja,
Birthday Gold,
10th BirthdAy Tee,
Geometric,
Brainiac RevivalRow 3:
dA PRO Camera Bag
I have 8 tshirts like yours