the bullets that I have found in playgrounds and the hypodermic syringe with the needle still intact all fall under 'things that shouldn't be there'.
All those little mangled pieces of aluminum (or whatever metal that is) in the chipped playground bark 'that shouldn't be there' but is falls in that category too.
And to be selfish - those other detectorists who are detecting someplace where I have thought about detecting and hadn't gotten to yet - or was 'just going to do that' as I pull into the parking lot - 'shouldn't be there'.
Guess I can add to the list - the batteries I've found in the sand at beaches and in playgrounds because it was easier to bury them than to dispose of them properly - especially when they are now corroded, having sharp edges exposed for someone to cut their feet on and acid leaking into the ground.
Though none were 'dug up' all those used condoms in children's play areas DEFINITELY don't belong there!
Oh yeah and on one beach that I got too before others got there was the 'sand sculpture of a nude female' also DEFINITELY didn't belong there - I made sure no one else saw this.
And guess can add the rude guy who decided that if I was bothering his vicious dog that he should tell me to leave or he'd sick the dog on me didn't belong there either.
Added is the pull off aluminum lids from tennis ball cans that got discarded in areas other than the trash can. Guess too the 'juice bags' that are buried instead of being tossed in the trash where they belong.
On the positive side when one wants to detect alone one can't be upset with the curiosity of kids who want to know 'are you looking for gold or buried treasure?'. God bless the children.