My daughter and I like doings stretches together. Actually, anything that gets me down on the ground with her is a hit.
I'll lay on my back and stretch my legs, do the bridge, and other little stretches and exercises. She loves to do them with me.
She also likes it when I hold her and roll around. Sometimes I'll roll like a log and go "beep, beep...".
She never gets tired of me chasing her around. We'll chase each other, hide, and pop out.
Tickling is also fun. And games like, "round and round the garden" or Patty Cake or the Itsy Bitsy Spider.
What about tea parties? Set her stuffed animals around in a circle and serve them invisible tea and cookies.
My daughter also loves to prepare supper with me. She's a bit older than yours (21 months) but she stirs, pours, peels eggs, and nibbles on the veggies while I cut them. She loves to drop the food into the pot and check back periodically to see how it cooks.
She also loves to help me clean. She gets to hold the scooper while I sweep. And she washes the floor with me (one of her favorite activities).
If she doesn't like coloring, perhaps she will enjoy painting better? You could even put a huge piece of scrap paper down on the kitchen floor, strip her down to her diaper and let her crawl around in the paint.
Do you like to dance? Or how about walking funny? Walk down the hallway in a goofy way and ask her to imitate. Try different walks and hops.
Kids also love water. You could just put out some tupperware containers, bowls and pots on the ground with some water and let her make a mess.
Another thing my daughter really likes to play with is colorful things like froot loops or colored paper clips from the dollar store. She likes to transfer them from one object to another, drop them on the ground and pick them up, etc.
Another things is to lie on the ground and go, "night night" and pretend to sleep. Let her wake you up and then go, "good morning!" and sit up. Then let her try. Or put her stuffed animals to bed, then wake them up, then change their diaper, then brush their teeth, then put them back to sleep again.
Hope your kid likes some of these ideas!