Do you have your kids' ruler from last year and the year before that? Take them out and crate these one-of-a-kind pen holders that will perk up your desk from boringness. Some adhesive will do the trick and of course, there no limitations on the design you would want to make. Classic and organized is what you are aiming for.
When the case of your flash drive broke, don't immediately throw it away. Test if the USB is still working. If it is, then you can salvage it by putting the USB in a carved eraser. The size of the eraser must coincide with the size of the USB. Your kid will store his/her e-files with style from now on.