Next time you're at a thrift store, search for a set of poker chips or checkers. Buy two sets of matching stickers. These are so much fun to match because children can easily slide them around on a table top when finding matches or mixing them. Save the tops from various plastic milk and juice containers to use for this which are also flat and can be moved around easily. After decorating their plates and bowls, children then glue them onto their butcher paper rounds.
Children create faces on toast rounds.
I cut shapes from various colors of posterboard and in several sizes then laminated them. Until you make yourself a set, you won't appreciate just how often you'll use them. They can be used for so many things, but they are especially great for children to see the differences between squares and rectangles since so many boxes have both shapes on them. Activities might include allowing children to figure out ways of stacking the boxes. Or, children can decorate all the square sides of a box one way and all the rectangle sides another way.