I keep saying I want to take a weekend trip to Bronner's, but haven't made it yet. I worked for a lady who went there every year and spent a fortune!
http://www.bronners.com/
DH anchors our tree to a wall, actually did that the first time when DS was a toddler. No pulling that tree down. Neko (the Cat Who Rules) doesn't usually pay much attention to the tree after the first day or so. We hang the "unimportant" ornaments on the lower half, started that cuz of DS too lol! The cat has managed to destroy every tree skirt though. I gave up and the past couple of years I've just used a plastic tablecloth.