A box without a story is just a box. Here are four ready-to-run scenarios, each mapped to a product type that will make it shine. I've run the 'Lich's Phylactery' three times—it never fails.
1. The Wizard's Vault (Arcane Security)
The party finds the study of a paranoid archmage. His final research is sealed in a 3D Wooden Puzzle Safe. The combination isn't numbers, but the answers to three lore-based riddles about his past (e.g., "The year I forsook the court"). The satisfying clunk of the real lock opening reveals the scroll within. Prop Link: Use the Puzzle Safe.
2. The Fey Court's Gift (Emotional Bargain)
A satyr queen gifts the party a Layered Butterfly Music Box. "It holds your compensation," she smiles. The first layer opens to a haunting tune and a carved scene of a forgotten tragedy. The second layer reveals a dried flower. The final, secret compartment holds not gold, but a Geas scroll binding them to a new quest. The slow, beautiful reveal is key. Prop Link: Use the Butterfly Music Box.
3. The Lich's Phylactery (The Multi-Stage Boss Puzzle)
This is my masterpiece. The phylactery is a series of nine interlocked rings (the Luban Lock Set). Each lock represents a memory the Lich has sealed away. To destroy it, the party must solve each lock (skill checks or clever roleplay), experiencing flashes of the Lich's mortal life. The final lock requires a moral choice based on those memories. This took my party 45 minutes of intense, collaborative engagement. Prop Link: Use the Luban Lock Set.
4. The Guild's Test (Tactile Trial)
To gain the Thieves' or Artificers' Guild trust, the party must solve a "Ghost Lock"—a Chinese Old Style Fú Lock. The trick is the key is magical; it must be 'attuned' by solving a separate heart-shaped puzzle first. It teaches that tools are useless without the right knowledge. Hand them the actual puzzles. Prop Link: Use the Fú Lock and Heart Lock together.
Your next action: Pinpoint the scenario that fits your campaign's tone. Steal it whole, or adapt the core idea.