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My awful step by step.. I forgot to take pictures. The hardware cloth is a pain to work with so I just rushed through it rather than taking pics.
Basically, I cut a square piece of hardware cloth and put it inside a PVC pipe about 7" long. If you pull the hardware cloth tight inside the pipe, you can get it to stare there pretty easily with just tension. I like to put a couple zip ties near the bottom to keep it from falling too low.
The bottom is also a piece of hardware cloth cut to be about the same size as the inside diameter of the pipe. I use all the loose edges to hold it all together. Needle nose pliers are your friend.