I've noticed across various rr forum boards, members will mention they bought an item only to discover at some time later on they'd already purchased that item years earlier and stored it away only to forget about it. For those of with extensive or even modest size collections (possibly even of different gauges), how do you keep track of all you have to avoid needless duplication? Do you use a simple spreadsheet you've created for yourself or a commercially available program? With so many commercial inventory/collection programs to choose from, which one best suits your needs and why? Is a listing of item, condition,model and manufacturer all you keep track of, or for insurance or ther reasons, do you require more such as when and from whom you got an item, how much you paid and possibly even include photos you taken of that special engine or car? And what about other things like buildings? Which commercially available inventory program is you favorite "can't do without" one?
How do you feel about having a inventory of what you have? Do you inventory your collection?