1-2 year old handles a simple center rotation very well once they get the hang of it.
How varied are your activities? What is your schedule? What do you do beyond coloring?
Open-ended art- fingerpainting, painting at an easel or on a large piece of paper on the wall, painting with things other than paint brushes, water color painting, most recently the 1 and two year old enjoyed cutting out a butterfly and using posterpaints and qtips to put dots and lines on half of their butterfly and then closing and pressing...opening up to a beautiful colorful butterfly.
Some of your children will be ready for scissors. Yes, scissors...start them out with playdough scissors and then progress to paper. They will sit and snip snip snip.
Are your toys switched our regularily? Young toddlers definately like/need a variation.
Sensory: shaving cream, sensory tubs with beans, water, rice, anything.
What are you doing at story time? Puppets...action songs, retelling of stories. These kids can do this!
Flannel board/magnet boards, contact paper sticky side out are also very popular at this age.
Do you have a low window? Write with washable markers. Wipes off with a sponge.
Do you have an area in your room that you can use for large motor toys? Young children need to be able to climb and crawl, bounce, roll, rock, roll balls, etc. A simple obstacle course is always a thrill, a tunnel.
Have you done the parachute with the children yet? These children are capable of very simple parachute activities.
Get a routine going...1 and 2 year olds thrive on a routine and a variety of activities and they CAN learn to clean up one activity before starting the next.
Have you added rhythm instruments to your dancing? Have you added scarves? How about crepe paper streamers? Jingle bells on ankles, wrists, or around their waist?
You can pretty much do any Preschool activity...just simplified a little. It does make it easer for you as the teacher to plan using themes.