Stave

Tub surround
A bench to sit on outside the tub (price varies)

Cedar or vinyl cover
Block debris and save heat ($575+)

Equipment shelter
Houses the pump, filter and control system ($1150+)

Mobile access
Add control your tub while away (+$260)

Heat pump
Heat the tub more efficiently (+$2700)

Jets
Plumbing and air control (+$200)

Stairs and steps
Choose handrails and height ($350+)

Tub light
Illuminate the water ($145)

Outdoor shower
Rinse off before getting in ($1995)

Cold plunge
Small barrel cold plunge ($3495)