One of our training exercises is to get Skye to put her head in a bucket. The idea is get used to put her head in/through things (end goal: collar, leash). It's one step further than the exercise where she places her head in a ring.
The exercise for us is really simple: find something deep that is heavy enough to not move if she touches it, and put a treat in it. But it ended up to be quite challenging for Skye. Actually it stressed her quite a bit:
So we lowered the challenge by using a shallower container, but that was still too much for her:
As we have more exercises to work on, we are pausing this one for now. It's really important to not scare Skye off training. She shuts down pretty quickly.