I have been in the childcare field my whole life. Here are some things off the top of my head. Go to www.crayola.com Tons of great ideas. Also google kid activities or crafts for kids. There are at least 100 things to do with a roll of toilet paper! paper plates too! The dollar stores has lots of craft stuff(foam, pom poms, wood sticks, playdoh, pipe cleaners, chalk, etc..) for a buck! Also fun with food. Do you have pets? I love making pet treats with kids. Google pet treats and you will get loads fo recipes.
What else, Scavenger hunts. Homemade musical instruments(rainsticks with paper towel roll and rice, drum with oatmeal canister and constuction paper to decorate, plastic plates that click together for a tamborine with rice, etc...)And kids love to dress up and play pretend. Color sheets. Maybe start teaching her to play games online. noggin.com, nick.com, disney...It will teach her fabulous hand eye.
It might work better for you to have a theme...every week or month. solar systems, garden, animals, body parts, colors, etc... Brainstorming always gets my mind going. Go to grocery store and buy everything purple. And all day long use the purple stuff. You can do numbers, alphabet, shapes, etc...
Another great idea is go to the library or a museum or an early morning stroll. or evening.
And sprinklers are lots of fun
Have fun and keep thinking! HTH!