My dad used some parts of some of my fish cages and some fish cage material to protect a few fruit trees the deer kept eating the buds off of. Seems to work. They're high enough I don't think the deer can get into them even though they are open in the top. (My parents live with me on the property in an apartment above the garage when they are not in Florida. My dad is one of those guys that can solve any problem and build anything.)
