What use is a splintered hot tub?

Hint 1 of 5:

Not much in colonial times, nor in the present day.

Hint 2 of 5:

But of course, there may be some useful pieces to pick up.

Hint 3 of 5:

So search the hot tub mess for things.

Hint 4 of 5:

There are five items you can get here.