Let me take you on a small ride into my past. I use to put up a Christmas tree every year. A lovely one, 6.5 feet tall. My ornaments were silver, blue and white. I loved putting up my Christmas tree. LOVED is the key word. One year we adopted a cat. We named him Walter and introduced him to said tree. Needless to say, the tree hasn't been up in two years. Walter, the sweet angel, destroyed our tree. Couple years later, I find Pinterest. Then I find this little number on pinterest and decide it is my destiny.
First acquire a pallet. If you look around chances are you will find one laying around somewhere.
I attached a picture hanger on the top back of the tree to hang it up on the wall. I then gently hammered in some silver push pins and hung some ornaments on the tree. WA-LA! Cat proof pallet Christmas tree.
Hanging hardware bought from Walmart: $6
Ornaments: From my attic, Free
Total time: around 2 hours, the thumb tacks were a bear to hammer in.