When my sister was in high school she wrote letters to Charles Manson. He wrote her back. My dad intercepted the letters in the mail. He never opened them, but still has them. My sister never knew he wrote back.
A small diary/journal written in Japanese with small letters also in Japanese in it. My grandfather fought in WW2 in the Pacific. He gave the journal to my father before he died. He said it was from a Japanese officer that he killed. My father said he was very shaken and seemed deeply disturbed by the memory. He made my father promise that he would never look to return the journal to the family or try to look into it.
My father has now passed and I have the journal. Creeps me out. Wtf.
My family owns a petrified walrus private part, my grandmother took it to get it identified at the Smithsonian several decades ago. Apparently her grandfather or maybe it was her great-grandfather brought it home after he spent several years on some type of expedition up around northern Alaska and points north. It has been loaned out to several museums at different times. The family has talked about selling it but everyone has to agree and so far there is no agreement about selling it. So I own 1/67th of a petrified walrus private part.
When I was 18, I bought a print of a 1918 German zoo advertisement from a thrift store. I thought the artwork was neat. It had a leopard on it and I was completely cat-obsessed at the time. Turns out the artwork was by Ludwig Hohlwien. He would go on to produce Nazi propaganda.
I have a few Ivory jewellery pieces from the early 70s my parents bought back from Botswana, and a poison arrow kit. Mum has the 3-metre long python skin she just put in her luggage from back then too.
A first print edition of Batman Damned #1, the one featuring Batman's "little batman". (From DC Black Label featuring more adult content. Violence and swearing are totally fine, but a shadowy Batmember profile made people flip out enough they removed it from subsequent print runs)
But my brother and I removed the original (burned-in) oscilloscope screen and replaced it with an LCD panel, replaced the controls with six-button arcade fighter sticks, and hooked the whole thing up to a hacked Xbox with thousands of dumped ROMs on it. The original board was gone before we got the cab, donated to another machine that did have a working monitor.
Controversial because some arcade historians would prefer to see these cabs preserved rather than hacked. But with a burned screen and no board, this cab was pretty useless.
A very, VERY large rubber male member. Like, unreasonably large. My friend had it sent to me as a joke on a random day for no reason at all. Spent $300 for the sake of a joke. I was like bro something is very wrong with you lol