I'm a big fan of the idea of DIY, but not so much on the implementation. I'm not intimately familiar with many DIY processes, but I do know that its become even easier to get materials and fabricate items than any other time in our history. I know there are online CNC services, 3d printing services, and such that allow you to submit schematics to prototype. And one-off items aren't quite as expensive to fabricate as they used to be. With Web sites like instructables and Make magazine, resources (e.g., sewing patterns, communities) are endless to help you.
I've got many ideas that i'd love to implement, but i'm always putting them off heh.