Strip lights are a great alternative to Bit Lights. They're super bright with two LEDs on each strip, and with connectors at each end they can be connected together in a chain to make wiring them up easy.
Each strip is exactly the same size as a 1x6 LEGO plate and has a self adhesive backing. Stick them to a 1x6 plate and then attach that to your model - this makes them extremely flexible and moveable when needed.
Available in four standard colours, plus the extra large colour changing strips (which fit a 2x6 plate) which slowly rotate through a rainbow of colour.