What I have done is take a large feeder cup. Cut an opening in the side. Tape under the of opening and then staple a plastic mesh hanging from the top that is sealed. atatch off the ground in a good feeding area. As the crickets climb the mesh up the back the chameleon can pick them off. I also...
Super worms are not a good feeder insect. If you do feed them out clip the pinchers off. I have seen a chameleon eat one to only be killed by it eating through the gut.
I used acrylic to build the drain. Then made a 5 foot bag out of coco fiber mat and filled the inside with the goshes frogs light weight rock. This was then blaced into the acrylic sump and placed over two 1 3/4 drains that go to a 25 gallon holding tank.