I also would suggest the four year old Pre-Kindergarten. I had my daughter in a Pre-K program that was three days a week. She loved the teacher and met many other really nice kids. Her teacher was excellent and very resourceful.
Another idea is to let her play in the yard while you watch. Many times my daughter just wants me to watch her play with her chalk, collect acorns in the yard, blow bubbles, play in the sand, play on the swing set, dig in the dirt (if you have a dirt patch).
Playing board games, such as the memory game, puzzles, etc. is another option.
Baking together: This can involve many types of togetherness. Me and my daughters will make simple cakes, and I put together a simple glaze and let her decorate the cakes with mini m&m's and cheap tube frosting. Then we give it away to a neighbor or friend or have dad take it to work.
One more idea for you, always have an area where your daughter can have access to plain paper, colored pencils, crayons, some kid scissors, tape. Let her imagination take over. Many morning my daughter, whose is 5, will wake up and just grab some paper and start coloring, drawing, cutting, and taping her art work to the walls for our decorating pleasure!
Good luck! Let us know how it goes!
K.