Old clutter?
 

Do you have stuff that you think you have got rid of and then randomly come across it while having a mooch around?

That happened to me today with a certain document I thought I had given back to the College I used to attend:blush:.

I'm very minimalist, partly down to OCD about being tidy, if I don't use something or it's just standing there I get rid of it

Wish I had kept old school stuff though

but yeah I didn't actually answer your question, once I had no idea where my birth certificate was, hadn't seen it in years, and it fell out of a random envelope in a box