A surf balance board typically consists of two pieces, the board itself and a roller. Boards are made out of various types of wood or plastic, and some models are more challenging than others.

This wooden balance board engages 70% of your lower body muscles, and can be used to amp up your next workout or even as part of your physiotherapy. Your balance will be boosted in no time.

Kevin Alder got the idea for a balance board online, and when schools closed nearly three weeks ago, he decided it was a good time to make one. "I put one together and the kids jumped on it right away ...