Ateliers de manipulation
You could do this with colors or mix in some shapes too.
Counting Kites: Counting Corresponding Numbers of Objects, plus works on Fine Motor development too
Farben zuordnen More
pattern busy bag with colored popsicle sticks - free printable cards
Play Create Explore: Tracing Bottle Caps and Lids to Make an Outline Matching Activity/Puzzle
Farben zuordnen und Förderung der Feinmotorik (Montessori)
Wunschkind - Herzkind - Nervkind: Das Sortieren
Sorting, matching and counting with bottle tops! Such an easy upcycled game for preschoolers. Swap the numbers on the lids for dots to encourage counting and number recognition not just matching.
Homemade shape puzzles -- Love this idea! Only need items from around the house or playroom and a piece of paper. Can even do it at a restaurant.