This looks like a handy little board that can be soldered inline and powered from a 10mm, 3 pin LED strip. It’s based on the Arduino ProMini (ATmega329P, 5V, 16MHz, 32K flash, 2K SRAM, 1K EEPROM). It’s a little pricey for what it is at $28 + $5 shipping (to US), and doesn’t include a micro USB port (requires a serial converter) but definitely a cool form factor.
https://www.tindie.com/products/Danjhamer/chromatab
Another option for this form factor is our BlinkyTape controller, it’s a bit smaller, has USB built in, and a couple of I/O pads on the back for expansion: http://shop.blinkinlabs.com/products/blinkytape-control-board:
@Matt_Mets Cool, even better and cheaper! I went looking before I posted this, and I couldn’t find it for some reason. I wasn’t sure whether you sold the controller separately. Now I can’t figure out how I missed it. 
I suspect those would be awesome for ‘hoopers’, especially the blinky Tape.
Hmm. I wonder why they chose to use an atmega329 vs an atmega328
The 329 has a built in LCD driver but in this form factor that doesn’t seem to be a practical accessory…I’d think if they used a 328 the cost would be much lower.
I also was wondering what the benefit is over a $1.5 328p clone with 3 wires soldered?
Related
http://www.ebay.com/itm/272258567389?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://www.ebay.com/itm/272258567389?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Oh that’s just brilliant @Matt_Mets ! That makes a project I’ve had in the back of my mind for ages viable
@Robert_Atkins Awesome!
I build a same small LED strip controller with a attiny85… only 8Kb flash… but sufficient for small projects wit LED strips. I used parts of a Digispark.
…it’s far under $28, but take me hours to solder together 