There is a truck museum I intend to give my built trucks to. That's my solution. If I build a model I usually give it away when it's finished. So far on my list of stuff I've built and given away, tamiya mx5 to my father in law, modified first gear b61 mack to my grandfather, moebius/auslowe T904 conversion for my brother to give to his father in law, tamiya Nissan 370z to my friend to give to his brother in law. I like the construction process above all else.
Ben