My kiddos enjoy playing with magnetic letters and numbers on the fridge while I cook. My oldest is even starting to be able to spell out actual words which is cool to see.
Amazon  currently has a HOT deal on SODIAL(TM) Funky Fun Colorful Magnetic Numbers 1-9 Wooden Fridge Magnets  for just $0.60.
These magnets would make a great holiday or birthday gift for any toddler on your list.
Amazon  prices can change at any time so hurry and get this great deal now.