Helium - Helium lets you accept payments by credit card for anything you want to sell online.
LetterNote - Fine Stationery, Art Prints, Accessories & Collectibles
PiPer - A DIY Minecraft computer to build gadgets
Neonto - Visual tool for creating native iOS and Android UIs
Pennywise - Cross-platform application to open any website or media in a floating window
Rainbow Pencils - Make rainbows whenever you sharpen.