I like Tinks' idea, too I have trouble with disciplining my two as well, even though it's a bit different because they're so much younger, but yeah, I really understand the frustration in trying to find the balance between teaching them that they have to be careful, and not going overboard with 'punishment' for a simple oversight, itms?? As in, sure, it wasn't damaged through malicious or deliberate intent, but the fact remains that he *did* damage it and needs to take some responsibility for that. Awesome that you found another bouncer, this is what I love about our beautiful community!
Good luck with it hun, I'm sure you'll find the right way to go about teaching your lovely DS that even when mistakes aren't made deliberately, we still have to fix them and think more carefully in future *hugs*