Take 1 pint of nonfat yoghurt, abandoned at the back of the fridge but unopened and thus not moldy, 1 kinda splotchy banana, howevermuch creamy peanut butter you can scrape out of that jar (let's just call it a couple of tablespoons), and put these things in the blender. Whirrrrr. Pour gloopiness into ice cube trays. Replace trays in freezer.
While waiting, Furminate the hounds a little until they look at you in disgust and walk away. Refresh GT. Listen to a podcast.
Remove peanut-banana-yoghurt cubes from tray. Reserve two; transfer the rest to a more permanent freezer storage container. Give reserved cubes to the dogs, because they are good dogs, and it is hot.