Here's a few we've done...I help with the "lesson plans" that we do each week for our playgroup so that the moms have ideas to do at home to a related letter or theme of the week.
Dragonflies:
Tempera paints
Water
Paint pans
Eyedroppers
Coffee filters
Clothespins
Pipe cleaners
String
Add water to the tempera paint to water it down.
Pour the thinned paint into paint pans
Use the eyedropper to drip paint onto the coffee filter. Watch how the colors spread.
After the coffee filter dries, gather filter in the middle and clip w/ clothespin.
Add pipe cleaner for antenna and string for hanging.
K is for kitchen
Have children glue cutouts of a stove/oven and refrigerator on a piece of paper. Make the cutouts have an overlay so that the oven door and fridge door can open. Cut out pictures from magazines of food items to glue on the inside......or have the children draw the items.
Feet Painting
Put a large sheet of paper on the floor, and let the kids step in paint. Walk across the paper, step into a bucket of water to rinse your feet off. Use the paper as gift wrap.
Flower Painting
Pick some flowers from your garden or buy some. Put paint in a pie tin and let your child use the flowers to paint - they can use them like brushes or stamps.
Eggshell Tulips:
Supplies: Eggshells (or foam egg carton sections), green pipe cleaners, tempera paint and markers, hot glue or white glue
Clean eggshell halves and dry them gently. Or, for an easier craft with more durable flowers, use foam egg carton sections. Cut the cartons sections to look like a tulip.
Using tempera paint, decorate the shells to look like tulips. Let the paint dry overnight. When the paint is completely dry, add details to the tulips using markers.
Twirl one end of a green pipe cleaner into a spiral shape (this will be glued onto the base of the tulip).
Glue the spiral to the tulip (if using white glue, let it set for a few hours).
Growing Grass
Dampen a sponge and then put grass seed on the top of it. Next pour water over the sponge let your children watch as the grass grows over the next few weeks. This one will take some time, but it's interesting.