Place the peanut butter and honey in a food processor or mixer and combine well. Add the dry milk powder and the powdered sugar and mix again until smooth and well blended. Make into 1 long log and divide into 24 equal pieces. Roll each piece into a thick worm and place 2 peanuts or raisins at the end to look like 2 eyes. Chill 30 minutes before serving.
To serve, take a small flowerpot and fill it with balled up plastic wrap. Crumble up a leftover plain chocolate cup cake and spread that on top of the plastic wrap to make it look like a pot of soil. Using your finger poke a hole in the "soil", tuck the worm tails into the soil. Repeat this with 3 or 4 worms. Place the pot on a platter and surround the pot with the remainder of the worms