After picking up our second unappreciative, disdainful ball of fluff, I realized our store-bought cat tree was on its last leg (already being held by several Home Depot L-brackets). I decided I could do better myself and tailor it from kitten size all the way to adult.
Meet Natasha and Isaac:
After many iterations in Sketchup, I finally decided on a design.
And the finished product next to the generic one
I made a few other bits with the leftover pieces, and a pair of food bowl platforms to go with it all