Donatello had a pencil, a notebook he usually reserved for sketching diagrams or writing down new project proposals, and enough boredom to be coming up with
glitter-throwing test ideas. Not that he expected to use them himself (whether or not it worked on turtles as well as humans), but it was something to do while he didn't have a computer.
[OOC: Open to whomever! Come interrupt the terrapin. :D ETA: Commuting home now, gone for at least an hour. Will pick up pings when I get home. :)]