I have a large collection of those too. My aunt used to put up a huge display every year and she gave me my first house when I was in college. That started a slew of houses and buildings from friends and family.
I started small and each year, I would get more and more. My husband got tired of getting them out each year, but he always liked the look on the kids' faces when the village was all lit up.
This year, I am only pulling out a couple of my favorites. My dh is deployed and it is too much work for me to do on my own.