Finding and disarming traps is a beloved pastime in DnD. In order for a character to find a trap, they must use Perception or Arcana depending on the type of trap.
Once they find it, a character then uses either Investigation or Arcana to discover how to disarm the trap.
Finally, the character can either trip the trap in a creative way, or actually disarm it using either Dexterity, Strength, or Thieves Tools.
Some creative traps to try out: Filling with water, Swinging Blade, Flashbang, Trapping Mirror, Electrical Zap, Slippery Floor.