So, i came across this great tutorial on Design Sponge to make a round cat scratchy post from cardboard- here's my results.
about 1/2 way
finished- at least as far as i was willing to go after a few hours
in quality testing by Chloe
I used about 3 Avon boxes & lids. Chloe approved and her housemate Ozzy also gave his calws of approval.