Free startup idea for the day. 3D design software for the masses. It seems to cover lots of the bases in the article. I feel the need for this right now (just this weekend I wanted to print out a plastic part to fix the broken piece on my lawn mower). 3D printing seems to be an up-and-coming area. The hardware for this is still being perfected, but the software seems further behind. There are lots of competitors making 3D modeling software, ranging from FOSS to the ultra-expensive enterprise-y, but they all seem to have a very steep learning curve. Most people who are going to own 3D printers aren't going to want to dedicate their live to learning the intricacies of 3D CAD. Ideally, I'd think the software would be based on photogammetry [1], which would allow you to take pictures of an object you want to copy, but allowing you to make tweaks (i.e. extend the portion that is missing because it broke off, etc). Think of the MS-Paint for 3D objects. I think it covers the unsexy and schlep aspects, since it seems doable, but would take a lot of tedious work. It seems like it could start out very focused at first, and expand from there.