Decorate several pots with different faces using permanent markers, stick-on eyes or even bits of wool stuck on with glue to make ears, mouths and noses.
Once you have decorated your pot, make sure it has good drainage holes. If necessary, make your own with a drill or a sharp pair of scissors. Fill it with a multipurpose compost, leaving around a 1-1/4" gap at the top.
A piece of blotting paper or paper towel will help keep the alfalfa seeds moist. Cut a circle just smaller than the top of the pot, place over the compost, and press it down firmly. Place the whole pot into a bowl of water to soak.
Once the paper is wet, lift the pot out and leave to drain. Measure out a small handful of alfalfa seeds and lightly scatter them over the surface. Don’t sow too many as dense growth can lead to the stems rotting.
Put each container into a paper or plastic bag and leave in a bright, warm place, such as a windowsill. Check every day and remove as soon as the seeds have germinated. Water regularly and when the sprouts have grown sufficiently, enjoy the harvest by giving your pot a "haircut."