Why not just add some weight?
I would agree with this, it would appear that the main concern is the weight, for both safety and security. If you can remove that vulnerability then you can remove the tip/theft danger somewhat. Although not in the security industry our business does have lightweight portable items that are of value to our business, if they cannot be secured to the floor, the they are made heavy.
To prevent or record in place vandalism though you would need the assistance of the others here for designing a small scale mobile surveilance system I would assume.