When I was a small child, my favorite game was Natural History Museum. I'd get out all my dinosaurs (and I had hundreds, mind you-- everything from those Carnegie Collection models they sell at museums to Jurassic Park action figures to 50-years-out-of-date neon plastic 1" tall ones from the plastic army men and cowboys section of the hobby store) and just... arrange them. By taxonomy, by the period when they lived, by features I wanted to highlight, any old way. I'd make display cards or signs or draw murals. And then when it was all sorted, I'd get my mother or father or sister to walk through like I was giving them a tour of a museum I curated, and just having all my toys in the right order and my knowledge and ideas on display was the bulk of the fun.
Sometimes I think that's just what I'm doing now, but with fantasy instead of dinosaurs.
(I'm sorry if this seems masturbatory to you or whatever, I'm just reflecting on my general approach as I have frequently been for some time now. Perhaps I felt the need to write about this to gain the insight of others, but I think it was mainly just so that those of you out there who read my thoughts better understand where it's all coming from.)