The latest cheap toy I've discovered is to take a big cardboard box and cut holes around the sides with a box cutter in varying areas; high and low. If you have more than one cat, one can jump in the box while the other is outside, and they stick their paws through the holes trying to get each other. If you only have one kitty, put him/her in box and take a teaser toy to entice kitty near the holes. Fun for all!