What is the most useful hot tub accessory besides filters?

[StringTheory83]

I already know I need filters. What accessory actually makes maintenance easier day to day?

[Aisha]

Test strips are the first thing I would buy after filters. Clearwater Hot Tub, Pool and Spa Test Strips x 50-3 in 1 helps you check the water before it becomes a problem

[RoughDaemon]

A floating dispenser like AQUAVERITY Chlorine Dispenser for Hot Tub with Built-in Thermometer is also useful if you use tablets

[Kai_37]

The best hot tub accessories are not glamorous, they are maintenance tools

[Shane]

Cup holders and lights are nice, but clean balanced water matters first