Early in your study of microscopes, before students start preparing their own slides, have them create index card slides - it's easy, and they work under a microscope.
Cut an index card in half, length-wise.
Punch a hole in the center of the card.
Place a piece of tape over the hole.
Use the sticky part of the tape to pick up something (dust, fabric fuzz, pepper, etc.).
Place a second piece of tape over the hole, on the other side of the card, enclosing the captured material.
Label the slide.
View.
