Problem: Styluses (styli?) feel weird when writing or drawing on an iPad because the screen doesn't feel like using a pen and paper; There's not enough friction. Studio Neat aims to solve this problem with The Cosmonaut, a stylus with the feel of a dry-erase marker. If the project gets out of Kickstarter phase and goes into production, it'll retail for $25.
This video demo of The Cosmonaut shows a prototype in use with Draft, 37signals' straightforward sketch app for iPad.