I have also used black tomato cages. I use bolt cutters to separate a 4 ringed one into two 2 ring ones.
I bought some of those fancy ones from gardeners supply, and they are nice.
I have resorted to using green coated chicken wire (Tractor Supply has it) around my woody peonies. It keeps those pesky rabbits from eating the bark. I anchor it with either Bamboo or rebar.
When I took the dogs out for their evening walk last night ( Easter) there was a huge rabbit 10 feet from the back stoop. I
Just yelled at it and it ran away. I'm sure it had been sampling Hostas or daylilies.
It was not the Easter bunny