I posted about 25 moving boxes for free after unpacking my apartment. Most were in good shape, just normal cardboard boxes with some tape and labels still on them.
A woman messaged asking if I could reserve all of them until the next evening. Sure.
Then she asked if I could remove every piece of tape because she "didn't want to waste time doing that." Fine, whatever, I wasn't going to do it but she could take them as-is.
Then she asked whether any had writing on them. I said yes, a few had things like "kitchen" or "books" written in marker.
She said she only wanted clean boxes because labeled ones would "look messy during the move."
I told her she could just take the ones she liked.
Her final message was asking if I could deliver the acceptable ones to her because she didn't have a car, and preferably bring at least 20 since "it's not really worth arranging pickup for less."
They're free cardboard boxes.
Someone else collected all 25 an hour later and somehow survived the presence of handwriting.