A couple years ago, when various other remedies didn’t deter deer & groundhogs from eating our most expensive little trees, I made up some cages for their protection. They’re just made of galvanized black-plastic-coated wire fencing, no big deal. At first I was going to only have them out during the winter, when the critters were hungry enough. But since we’ve gotten so used to them, they’ve become invisible, and I’ve not put them in storage yet.
They seemed to work well, but the groundhog (I’m pretty sure) was able to reach through the bars last winter. I then wished I’d done the baskets with the 1" version of this fencing material (my openings are 2"x3"). So something had to be done.
Because of that, and in anticipation of the coming cicadapocalypse of 2021, we decided to upgrade the baskets with plastic mesh. It’s also black, and has about 3/8" square openings. The wrapping took a couple weekend days, because the mesh goes everywhere, and has to be secured to the cage in many places. I used mini black cable ties, and just finished the last one (very tedious!) I also expanded about half the cages to give the trees a couple inches of clearance.
I suppose there’s a risk of the groundhog (Albert) of snagging himself, so I’ll be on the watch for that next winter. Otherwise, I hope this’ll keep the adult female cicadas off of the “baby trees” (as my wife always calls them). For the trees that Albert and the deer hate, we’ll drape the mesh directly over them and probably wire-tire them to their trunks.
If I were to do this again, I’d consider the 1" fencing as I mentioned, and/or a black aluminum window screen product such as this, which would be a lot easier to wrap around the cages I think. But it would be darker to look at probably.
Anyone else doing anything to prepare for cicadageddon? Beyond stocking up on toilet paper? 
Cliff