@calebkraft I made it for the DIY Gadget Freak Clinic at DESIGN West 2014. It was fantastic - six of us gave short, five minute presentations of our gadgets and had a lot of fun interacting with the audience. We're doing it again in 2014, if you're ready to get motivated and do something with your FLora!!
I used one to emulate keyboard and mouse movement in a game controller for a kid who has muscular dystrophy. I chose the Teensy 2 because it natively supports HID. I can plug it into any computer and it will be seen as a keyboard and mouse. I don't have to install any software at all.
This makes it a great choice for gaming controllers and I can make it, then ship it to someone. All they have to do is plug it in and it works!
@calebkraft Well, since you asked, the concept was to sew the lilypad into a Fedora so that I would have a blinking light show around the brim.
The project didn't quite turn out as lovely as I hoped, in fact it was rather ugly, and there were a few technical challenges and even bloodshed along the way but I learned a lot. The coding (to the extent there is coding) was easier than the sewing!!
Someone brought the Jeenode to my attention. It looks pretty cool, but I'll be happy never to have to use another usb to serial converter again. They have RF modules bult in though, so that makes up for it.
You can buy the Jeenode as a kit that you assemble yourself. That is also kind of neat.
I've used the digispark, the femtoduino, and the teensy (teensy2, not teensy3). I had good experiences with all of them. The only gripe I had was how you had to program the femtoduino (it had no usb initially), but they fixed it.