If you are not using them simplest is to make wall art out of them, putting them into some custom deep picture frames and placing them in the hall of the room used for teaching that subject, or in a common room somewhere.
You will need some basic equipment to use them, a power supply ( 5V,+ and -15V ), a multimeter ( cheap one) and any oscilloscope if you want, and for the TV generator any PAL analogue TV set will do ( cheap or even free), plus some wire jumpers for connecting the units up.