Lego would make a fine currency. But I would be worried about lego inflation.
So, I think I would put my money in the LGBT lego set thinking that LGBT lego is less likely to reproduce than CIS-norm lego.
Come on, you put horny little CIS-norm lego is a box and come back a year later just find it overflowing with baby legos. Then you have to buy more lego sets to find home for all the baby legos.
It is an unending cycle.