Yes, free as in beer, on in this case, very old camera bubbles. Check it out:
"Several, several surveillance camera balls with tinted housing. These are designed to be suspended from a wall or ceiling. Internal metal bracket for camera mounting. FREE! Take them all!"
Only downside is that you have to pick them up in Montana...
Jokes aside, this shows you how big cameras used to be once upon a time.
H/T Marty 'Mad Dog' Major
The Giant Blowpop form factor never really caught on...