Go to the appliance store and get a large box.
Cut various openings into large box. Insert multiple pillows. Insta-fort.
Open up cupboard to pots and pans. Give child wooden spoon. Place earmuffs in position. Insta-rock band. Hours of fun. Have Advil handy for side-effects.
Glue, plus paper and $-store cut-outs.
Make Rice Krispie squares. Both of my children simply loved doing this at this age.
Washing dishes by hand. This is a blast.
Baths + soapy bubbles = minimum of 1 hour of fun if water is occasionally warmed up.
Library. Story reading.
Make Jello Jigglers.
But most of all, you really shouldn't be entertaining your child the whole time. Kids really need to learn to play on their own. I didn't realize this with my first child and I now pay for this by the fact that he will not play by himself.
Whereas, my daughter was often forced to spend the extra 5 - 10 minutes in her playpen while I was dealing with destructo boy... and she plays most awesomely by herself. When Destructo boy is gone, I can have a whole day to myself because she will entertain herself peacably. This was from the age of 3 on.
Last! Don't expect too much of your time.
Because it will feel long but then it will be over and you'll be thinking...
I love that child!