I finally got around to setting up a store for anyone that wants to get some MonoGame stickers.
https://www.stickermule.com/user/1070668489/stickers
We put a tiny 5% markup on them to help fund hosting/hardware/evangelism and note that shipping is free within the US. And if you have any other ideas for cool stickers let us know!
If you want to make your own stickers for your game/company I highly recommend Sticker Mule and if you sign up using this promotional link below you’ll get a $10 credit and the MonoGame project gets a little kick back as well: