Bryson has a favorite new game, called "Attack the Suspended Snack Ball".
Here is how it works:
Step 1: fill open-weave rubber ball with Bryson's fav treat (like a big hunk of lamb filet)
Step 2: tie it to an elastic band
Step 3: throw it over a ceiling beam and let it suspend mid-air (and balance it with another toy of similar weight)
Step 4: watch Bryson attack it mercilessly for as long as the treat lasts
By the end of the game, Bryson would have expended all the energy he'd consumed and enjoyed a great deal of fun (and hopefully not noticed that one of us has left for work). I know, it's ingenious.
Here's the game in action: