You can add LEDs to your cross-stitch project using an Arduino LilyPad and conductive thread.
Learn how to make a FLEX Sensor for almost no money at home. These kinds of sensors cost quite a lot in the market ranging from 10$ to 30$!
3D Shibori lets you add texture and flexibility to fabric with thermoplastic qualities. It's easy and requires minimal supplies.
I set out to prove that there is an alternative to caustic and environmentally harmful commercial textile dyes.