Seeing all of these collections reminds me of a brief story.
My son (5 at the time) walked into my friends collection room and saw all everything laid out on shelves, book cases, and desks. Promptly says, "Ohh.. Look at all the toys you've got! Can I play with them!"
My friend in absolute horror replied "Noooooo!".
My son was terribly confused and replied, "but why don't you play with them?" Poor kid, he couldn't get his mind wrapped around the idea that some toys are just for looking at.