Sarhaspups, that's a great idea... I think I'd like to try it with Charlie, but we'll have to see if it is physically possible for our combination of sizes
Tying shoes is also a good one, lol. I've taught un-tying, and using Velcro, but never asked a dog to make a bow. I think I'll save that for much later
Something I've wanted to achieve is teaching Charlie (or another dog) more reading words and see if they can form simple sentences about what is on their mind ('walk park'). I'd also like to see how well they can match words into piles ('walk, leash, play' or 'food, bowl, hungry'...).
Is this to come up with future challenges?