I finished all of Dampé's Dungeon Building challenges. If you own any amiibo (LoZ-related only, I think), you can save dungeons you have created to share with other Switches. Some day I'll start the main quest on Hero mode, after building the Labo Robot Kit and getting tired of Super Mario Maker 2.
A tip for the dungeons: if you use a Floormaster Effect tile, it will put Floormasters in any chamber where they are allowed, not just the one you choose.
Tip 2: Antagonize your friends by making it rain bombs in every chamber!