We play hide and seek with Evie... off lead.... in the forest. It's great fun, but not really a clicker related game. Either my partner or I run off and hide, then we tell Evie to 'go find' (usually the person hiding will call her once so she has some idea on where to look) and off she goes. Evie loves it, and is getting much better at using her nose instead of running blindly around the forest lol. But obviously this isn't such a great idea if your dog doesnt have a reliable recall, especially with the amount of small, fast moving creatures which are found in the forest.
OoOoo! but the other game I play with Evie which she also LOVES is when I grab one of her toys, tell her to wait in another room, and then go hide the toy in/on/under things where she can't see it. When we first started playing this game I made it really easy for by making the toy visible, but now I can hide it in closed boxes and she'll still find it
It was great to see the change in her from when she stopped searching with her eyes and started using her nose. She always gets a quick game of "chasey" once she finds the toy as her reward.