'This is a collection of practical ideas offered for use by the educational development community. Based on the notion of a cook book put together by a community we offer Starters (ice breakers), Main Courses (ideas for workshops and events) and Desserts (ways to obtain feedback or evaluation)' (Popovic, 2017).

http://teachingcommons.yorku.ca/educational-developers-cookbook/

Whilst these are predominantly designed for face to face classes with a little imagination you can re-work them for online classes too.