I pick out a little spot in my house to put all my pieces. Each figure has his own spot. Corner of the spare bedroom, under the bed, buried in the kitty litter, under the ground round in the freezer, etc. I then put together an excel spreadsheet, list my figures then the location of their spare gear. Then to access this document from anywhere in my home I bought an iPad that I've clearly marked with masking tape and Sharpie pen "Richards item tracking ipad, do not use." just in case someone decides they want to surf porn while I'm looking for the Uzi to my T-800. This is really the most efficient way of tackling this issue, IMO.