D&D: Aygon's Cesspit Trap | Dungeons and dragons homebrew, Dungeons and dragons, Roleplaying game
Book of Challenges: Dungeon Rooms, Puzzles, and Traps (Dungeons & Dragons d20 3.0 Fantasy Roleplaying): Daniel Kaufman, Gwendolyn F. M. Kestrel, Mike Selinker, Skip Williams: 9780786926572: Amazon.com: Books
D&D 5E - Riddles and Puzzles in Gaming and Dungeons and Dragons in particular. | EN World | Dungeons & Dragons | Tabletop Roleplaying Games
Puzzles and Pitfalls (Part 1) - Kobold Press
Grimtooth's Traps are an Old-School Way to Cause D&D Chaos | Geek and Sundry