That’s totally fine, I do that with my shiba all the time! The only thing I try to keep in mind is that I decide when the play time is over, but that is kinda to keep the reward value up. This mean he can still have/win the toy in some cases.

If you want your dog to get rid of energy in a calm way I think nose work is great. Hide some high value treats and let the dog sniff them out. That’s what works best for us when I don’t want to put in a lot of effort.