Also. "Nobody likes roasted nuts!" has been stuck in my brain ever since I originally watched this whole show.
I think some of my favorite episodes are: Crayons, Snow Globe, Lava Lamp, Glow Stick, and Plasma Ball. Also, special shout out to the Mercury Light Bulb episode.
Those are mostly older episodes, but as I get through my rewatch I'll probably mention more of the ones I remember enjoying.