Merchandise

Vendor

Products

CafePress

Many products

Merch by Amazon (ask for invite)

T-shirts

Printful

Business cards, postcards, posters, etc.

PsPrint

Many products

Redbubble

Many products

Spreadshirt

T-shirts and other clothing, phone/tablet cases

StickerMule

Stickers, labels, magnets, buttons

TeePublic

T-shirts and other clothing, phone/tablet cases, stickers

Teespring

T-shirts

Vistaprint

Business cards, postcards, posters, etc.