To do this activity I used:
1 Paper bag (large)
Sharpie
M&Ms
Ice cube tray
Crayons
Glue
Draw a gingerbread man or woman on a paper bag (or any piece of paper if you don't have one) using the Sharpie.
Sort out M&Ms by color, place each color in a different compartment of the ice cube tray.
Have your child color the picture and decorate the picture by gluing the M&Ms on the picture.
During the activity talk to your child about the colors of the M&Ms and the colors of the crayons they are using. Find opportunities to count the M&Ms out loud, for example say "Lets put 1-2-3-4 M&Ms on the gingerbread man's shirt and lets eat 1 each. Here i one for you and here is one for me".
Ask your child questions and describe every step of the process. Remember that this is not just an artistic activity but also an opportunity for dialogue in the target language.