Wash or sanitize hands before and after an activity.
Separate chairs or spaces for kids by several feet.
Consider providing labeled individual resources for kids to use.
Use elbow bumps or long-distance high fives to celebrate rather than handshakes, high fives or fist bumps.
Avoid tossing or passing an object from hand to hand.
Do not use activities that involve blowing.
Be sure to include movement in your activities. (Do not just sit all the time.)
Show excitement (even if the activities are simpler or pared down).
Use cleaning wipes to clean numbered cubes or markers after one child uses it and before another does.