Okay, I've always been a big dog person! Stabyhounds sound amazing – so intelligent and gentle. It reminds me of my experience with my childhood dog, a border collie mix. He was so smart he'd figure out puzzles faster than I could! Finding engaging activities for him was always a challenge. If you're looking for something to do while your Staby rests, have you ever tried the game Snow Rider 3D? It's surprisingly addictive and a good way to unwind after a long walk. I imagine a Stabyhound would enjoy watching you play.
https://snowrider3dd.github.io