Glue differently textured items into an ice cube tray and let the children feel the items. Encourage building with block shapes or blindfold your preschooler and have him sort them into piles of the same shape. Fill balloons with rice or popcorn kernels and knot the ends of the balloons. Let the children squeeze the balloons. Fill six numbered socks with a differently shaped item in each sock. Hand out a sheet of paper that has six numbered boxes. Pass the socks around and have each child draw a picture of what item they feel inside each sock. Show the items after all of the drawings are complete.
Mix up pairs of colored cards or folders and have your preschooler match the pairs together. Fill sandwich bags with hair gel, glitter glue and confetti pieces. Seal the bags and go over the seals with superglue. Let the children play with the bags. Draw large circles in the middle of paper plates and wrap colored cellophane around each individual plate. Let the kids look through the cellophane at different objects. Demonstrate layering different colors to create new colors. Shine a flashlight through the cellophane to look at the objects. Allow your preschooler to apply stickers on a poster board.
Compile audio recordings of different animal sounds and print out "bingo" cards with pictures of the animals featured in the tape in the number slots of the game sheet hand outs. Play the recordings and play a game of bingo. Listen to popcorn as it pops and count each popping kernel together aloud. Limbo to some music. Tap on things around the room to see what kinds of sounds they make. Give every child a whistle and let them hide while you count to 10 aloud. Have the hidden children blow their whistles to see if the seeker can find them by listening.
Separate popped corn into three large bowls. Season one bowl with salt, one with sugar and the last with parmesan cheese. Let children taste the flavors and identify tell you the seasoning in each bowl. Vote on the most delicious flavor and make a chart to show the votes.
Purchase several bouquets with different flower varieties. Allow your preschoolers to smell the flowers to choose a favorite scent. Let the children draw pictures of their noses with their favorite scented markers. Give each child a scratch and sniff sticker.