Locking up Stealth Cams

I've heard of stealth cams being stolen. I also have some concern that someone might pop out the memory card and batteries. To address these concerns, I decided to lock up my digital stealth cams. Stealth cam sells locks for 14.00, but I found I had all the supplies on hand I needed to create my own lock. I am using a bicycle chain lock around the tree trunk. I connect the chain to the stealth cam via a small padlock. This also prevents entry to the memory card and batteries. This setup new would cost around 8$ at a department store.