I have an idea. You could add a "Trap Treasure" to the game. A trapped treasure would yield a regular treasure, Mabye a Sakhet one, for three reasons.
1. You have no Sakhet treasure in the game so far.
2. Sakhet was the most feared goddes, as well as the most destruction-crazed. it makes sense to put her on a trapped treasure.
3. She has a cool symbol, the Uraeus.
The treasure's container would be able to shoot projectiles after it was broken, in the same method as the Anibus Guard, minus the movement. But I think a player should have a method of telling it apart from other treasures, like it trembles or is a shade of red instead orange.