Small Flat Rate Box Cram

Haven't done this in a while and am totally craving the random.

Get a USPS small flat rate box, and cram it full of awesome stuff, anything and everything. You want to go for miscellaneous, random, varied items, anything that's taking up space for you, but someone else might look at and say, "Hey, cool!"

Be aware that this isn't necessarily about getting stuff you need, so if you get stuff you can't use send it to your local thrift store or re-swap it. or freecycle it. or whatever. But please, please do NOT send trash or anything that would make your partner crinkle their face into disgust upon opening the package!!! if you do, they can rate a 3.

Please have a rating of at least 4.5 to participate.

UPDATE: Just to be clear, this is the smallest flat rate box that costs $5.20 to send anywhere in the US.