Things with LEDS

I am looking for the simplest method of adding LED to models. I played with Arduino before, but that required a power source, resistors, ground connections, etc. Anyone have any good set ups that don't take up a lot of space?

Hey, feel free to join Digital Hackerspace, a Discord server about 3D Printing, Arduino, Raspberry Pi and other related maker topics!

Invite: https://discord.gg/WZyyYtA

enjoy

Any suggestions for things and logos to make? I'll take requests and make them.

Hi, I'd like to design a name plate with leds. Like this: http://www.thingiverse.com/thing:908360, but with a name.
any help will be apreciated.
Thanks!