I've been using containers food comes in as small planters (just a single reuse). We cut some into two if they're large (leaving lid on to make a bottom) - and drill holes in the bottom.
Love to recycle -great for the environment.

Carol, good idea. I have done that with 2-liter soda bottles. Also, 1-liter sport drink bottles and those 1-pound plastic strawberry containers make good ones for seed starting (and the strawberry containers already have holes for drainage). Saves money, too.