In 2001 I joined a band my drummer friend was starting, as a guitarist.
We found a great practice space, in the grounds of a storage company. Essentially they gave us a small room to do with it what we pleased. Small for them for storage, pretty large for a rehearsal place. WE had keys and access anytime.
We cleaned it, painted it and layed cement on the floor, put carpets...
WE shared the space with the other band the drummer was in. Rent amonth all of us was very cheap.
The room was in a small building, locked, and the whole place was secured with a locked gate and CCTV.
After a month or so, I bought a new amp, and I took it there. A heavy beast, I left it there, and for a week I left my previous amp there too.
For a week, because that's how long it took me to receive the call "dude, someone broke in last night".
They took EVERYTHING.
My two amps, a half stack and a guitar belonging to another guitarist, bass amp, drum kit, and lots of other bits and pieces.
Cameras? Oh, they "malfunctioned" that evening, so nothing was recorded. No broken locks either. Clearly an inside job.
We reported it, of course. The officer assigned to the case was into music himself, so he took care of these cases as he knew his gear and where people buy and sell stuff. WE gave him pictures, serial numbers...
A month passed, and nothing. The police told us that if things were not recovered in teh first 3-4 weeks, then our chances were very low.
It was lost.
Then, about 6 months later... another call "dude, they found our gear!"
They found everything, except my amp's footswitch.
IN some idiot's house. All piled up in a room, untouched, perfect condition. The police went in for an unrelated matter (drugs), found all that stuff there and got suspicious...
Result! BUt the band never reformed.
Another time I was helkping a friend of mine buying a guitar. She wanted an acoustic guitar and knew nothing about guitars, so when she saw a nice looking one at a pawnshop, she called me and I went to meet her and check the guitar.
We were outside, she pointed at the guitar, and while we were there, two police officers and a young guy walked into the shop. They spoke to the shop owner... and he came to the window and... took the guitar we were looking at!
It was stolen and that young guy was the owner.