+1 on arugula. For herps that need greens, they are a great thing to throw in.
Look into roaches as a replacement for crickets if you want to cut down on jumping. There are other slight benefits as well. I'm getting myself a colony of dubia roaches started up pretty soon, you can breed your own and they produce various sizes as they grow up for various sized reptiles. There are multiple species of roaches available.
P.S. don't forget, variety is definitely a good thing!