knitPro is a free web application that translates digital images into knit, crochet, needlepoint and cross-stitch patterns. Simply upload jpeg, gif or png images and knitPro will generate a graph sizable for any fiber project.
App idea: platform for internships; find internship, upload portfolio, get discovered and hired - Love a good success story? Learn how I went from zero to 1 million in sales in 5 months with an e-commerce store.
Portable light post made with PVC pipe! While this one probably isn't a geocache, it would be a cool idea to put a mini light post out in the middle of the woods as a cache. A bit like the lamp post in Narnia.
Tin Eye, a place you can upload a picture and discover if it is anywhere else on the net. A great way to discover your family members or a way to discover where your photos or photos like yours are being used
Lost a Tooth today - Tooth Fairy picture. Take a picture of your child while they are sleeping after they lost a tooth. Then, go to this website where they'll put the "tooth fairy" in the picture with them! I'll have to remember this one day!