Q: I enjoy interacting with students in f2f classroom by using clickers for example. How can I recreate this experience online?

A: It is challenging because the most powerful component of polling practice is a real-time feedback. In online classroom the polling still could be used to elicit information from students asynchronously to capture an overall mood of your virtual classroom. Look at some  tools that are available for free: 
TodaysMeet
Padlet
Poll Everywere
Polldaddy
Check the additional resources here.