For a few years now I have been putting on a large display up for each of our kids sharing day. It is a day that children bring special items to share with class mates. Toys are not recommended but the teachers do not mind, in this case
. I think the last one was a huge 100 sq ft. circus display. Our schools always have extra rooms that are used for art or music and they have locking doors. I set up the display about an hour before and then the class (20-ish) kids come in. The Klickies are not tacked down so we ask the kids to not bump the table, but they do. Its really not a big deal and we usually make jokes about what that kid knocked over. It adds a lot of chit chat material after wards. "oh, that was so funny when Johnny knocked over the elephant and it fell on the clown"
They are young kids and easily entertained
We let the kids touch stuff, we do want them to buy the junk when they go home after all
We and our school just moved so time for a new one
For our older kids we plan on doing displays when school papers are due. If it is about Egypt or Rome even on a small for called Fort Ross we could make an extra credit display.
We do not have glass displays big enough and the ones they do have are always piled high with trophies (sport children heads on sticks from other schools)