$50?!
I'd get one of those ball flingers & a ton of tennis balls for Speedo, I'd take Star into petsmart & let her choose a new squeeky-baby, and i'd let Sherman pick out something nice for himself (he's hard to shop for)--LOL!
Something else nice I often think would be great to have is a nice professional portrait of my dogs - don't know what photographers charge, but it's an idea!
Have fun!