This post explains how to use a cast-on rag with ravel cord to create both an open loop cast-on (good for folded hems) and a closed loop cast-on (e-wrap or latch tool).
The tappet tool can be used to create a nice crochet chained cast on edge for your machine knitting. This post shows you how to do it.
The weaving brush cast on method is quick and easy. It is leaves a ragged edge but you can stretch or draw this up. Useful when doing a quick sampler or tension square.