Fukubukuro/mystery bag/lucky bag is a Japanese New Year custom. But why wait for the New Year? These grab bags (packages?) have a good variety of the content of your choosing be it movie pamphlets, anime cels or posters. I can’t let you know exactly what are in the bags but you can nudge me in the right direction. Just drop me a note in the invoice saying, “can you include some horror?” or “I am a big fan of Police Academy do have any of those?” and I can see if I can include your requests in the package, no guarantees.