Tapbots, the studio behind awesome iOS apps like Tweetbot 3 for iPhone and the recently redesigned Calcbot for Mac, are having two t-shirts and a hoodie crowdfunded on Cotton Bureau. There are three choices, all featuring the Tapbots icon on the front:

• Black/100%-cotton American Apparel tee
• Tri-black/tri-blend American Apparel tee
• Heather charcoal/100%-cotton Independent Pullover hoodie

They've already far surpassed their order goal, so you're pretty much guaranteed to get one when the campaign ends in 7 days (as of November 24th, 2014).