My 20 month old loves playing duplo with me. He also likes to 'help' with baking with his own spoon for stirring etc but I need to be in a really good mood to start that. We chase bubbles in the garden, play with cars and garages and read stories. He is also quite good at amusing himself for half an hour while I mn have a cup of tea. We go on days out to farms, aquariums and sometimes go swimming. He loves just going for a wander and pointing out all the cars and lorries. His current favourite place to go is to stand outside the local building site and watch the diggers
We go out in the mornings to do something quite often a baby/toddler group so ds can play with other toys & children and I can chat to other parents (both equally important). In the summer going out to the park and garden is great but again often have friends over to make more enjoyable.
We do; Breakfast Play Get dressed/washed/ready Go out; class/playgroup/supermarket/park Snack Nap Lunch Play I make dinner while she watches tv/plays alone Dinner Bath Play Bed
So - this gives three "play sessions" a day.
Sometimes she gets engrossed in something herself - she will spend time alone playing with her dolls house, certain toys etc so I leave her to it but otherwise we do;
Painting, kicking ball/trampoline/sandpit in the garden, colouring, reading, puzzles, stickers, something crafty, dancing to music. Or we play with her toys - Favs at the moment are building blocks, toy farm, train set, cars on the mat.