When I was a kid I HOARDED every girl hair and kept them separate in my room because I could make batgirl or a cowgirl or or… anything i wanted! It let you do whatever you want!
My parents got me a mega blocks girly dollhouse lego knock off for christmas, and it was mostly used as a secret base for spies masquerading as a normal family.
I used mine as an ordinary house over for the interplanetary missile silo under it. The silo was built by a precursor race, and remained undiscovered until some loose radio waves in the house caused by the TV triggered the launch mechanism.




