Last year I discovered galvanized ladder wire/mesh used to lay out cinder blocks, which is a perfect adaptation for creating row covers!
So you want this...
...without paying for this:
Online: $29 for 6, plus S&H
At Home Depot ~$2 each !!
You can bend them into any shape, cut them with wire cutters, and still afford the cover fabric!
Look for them in any bog box store with building supplies, or even online.
So look for supplies from roofing, masonry and other departments; like this galvanized mud pan for $8.61. What a fabulous modern window planter!