So you know how Teemo can bounce his shrooms of each other?
Well what if, when he activated his W, he could jump off shrooms he walked over for the same distance? Like a certain famous Italian plumber bounces off his enemies.
It's not a very large distance, but I think it would be a neat buff to let Teemo use his shrooms as escape trampolines. Shrooms last a while, so he could, for example, drop one in a bush where the enemies have no vision, bait someone into chasing him towards said bush, then secretly bounce over a wall, making the enemies think he stealthed inside the bush instead.
The downside would be that if an enemy saw Teemo bounce, they'd know where his shrooms would be. But that's why I would make it so he only bounces if you activate his W beforehand, so you could still run over shrooms without bouncing if you needed the damage. It makes logical sense too, since Teemo would need the extra speed to perform his leap.
I dunno, I know Teemo's not a popular champion to want to buff, but I thought it might be a fun thing to add.