I frame my seizure letters. I've got a couple from Cuban cigars as well as gear. They are pretty generic, just a quick note letting you know items were seized, then two categories containing lists of various contraband. One has narcotics, steroids, etc. The other has tobacco, absinthe and a few other items.
Sometimes you'll receive a second letter a month or so later. This one is about six pages long and has a list of every law you broke. They try to get you to sign it and send it back. They even ask you for money to open your defense case. At the very end there is some text basically saying if they don't hear back from you, you admit guilt, forfeit your items and charges are dropped.