How do you raise homemade wire rabbit cages off of the ground?

I am talking about the ';commercial'; style rabbitry ones, that are all wire including floor. Picture would be great. I can find all kinds of cage plans, just nothing that says how to raise them off of the ground.How do you raise homemade wire rabbit cages off of the ground?
Often in commercial areas you can find discarded wood pallets. They are free and would work well for your application. Or cinder blocks would work to elevate them even more.How do you raise homemade wire rabbit cages off of the ground?
I had 100 rabbits, and all the cages were suspended from the ceiling. Makes cleaning up a snap.
Build a frame that is slightly smaller than the cages and set them on it.
Just use 2x4 boards and build a frame, or put them up on concrete blocks.