I've got a wireless chime from Lowes. Works (barely) but I YEARN to be able to actually SEE who has breached the gulf fixed between the mouth-breathing cretans and my harem of highly favored wimmen types who actually RUN this joint.
I, as the main inhabitant of the dungeon in the backshop wish I had INSTANT visuals of the goobers. I am the keeper of....um....*several* Portable Handheld Lead Poisoning Distribution Units....in various calibers...and I am a shameless profiler of all manner of criminal types. If I can't see'um, I never know when to burst forth with my cape and mask.
Can't spend a bunch, but I don't wanna ignore the feeble beeper and find out later I shouldn't have. We are too close to the Federally Funded Felon Factory to just have a chime, since we have lots of retail walk-ins.
I do security cameras as well (big surprise right?) and I LOVE being able to see who is upfront before I walk out there. Some clients I just don't want to see, I look in the cameras and see who it is and I walk up or I don't.
This is also super important since we come and go a lot in the shop. Though we do give the shout out of "It's me!" when one of us walks in usually. Cameras has saved my lazy arse from getting up a many of times.
Also the 2nd most used reason for the cameras is to figure out where something was put down. We will go back and see... "Ok, I walked in with it here... went there and oooo yeah, I put it next to the copy machine (or whatever)."
3rd reason is because this douches forget to clock in sometimes and we have to go back and see what time they walked in.