I wish I had a worthy list , I ' ve really only started thinking about puzzles over the last couple months . Here ' s a more Alice in wonderland themed one my players likedIt essentially boiled down to the players finding a cauldron with blue liquid and a cauldron with green liquid next to each other in a large room of a mage tower . The blue liquid shrank them and the green grew them . They stayed at that size for 30 minutes , which they sort of knew from a note next to the cauldrons . They ended up finding a mouse hole while shrunk and after fighting off some relatively large rodents , retrieved a key normal sized which they had to haul back together as they were only about 6 inches tall each . in the main room , they also became aware of a large door with a large keyhole if they drank the green liquid . It didn ' t take them long to solve the first real puzzle where they have to put the key into the blue cauldron to grow it large enough to open the lock on the giant door . I had this door lead them further down the progression of the quest where they shortly after returned to normal size , however after clearing a later room they had already shrunk back to normal size they noticed a comically large keyhole in the wall true puzzle . Running back and growing the key still doesn ' t make it large enough and any attempts to double grow it had no effect . Instead , the players finally figured out they had to use an enlarged key AND pour some of the shrinking liquid into the keyhole to get the right key to keyhole size ratio . This opened a secret door with magical loot . There are a ton of ways to change this idea around , but again it was very simple mechanics things get large or small with the players actively playing through rather than just sitting there scratching their heads . Also , the true puzzle bit was extra and could have been skipped if the players just couldn ' t figure it out . Hope this made sense