I think my dad still has one, technically. We fused a couple into potions, to see if the effects would change or carry over, but when I drank mine it was... weird enough... he decided not to try it. I'm sure he's saving it for some unfortunate pranking.

[One reason why he's glad he can make his own. He doesn't know how into pranking his dad might be, but he'd like it if someone else was the recipient.]