From The Submitter:
Finally found a good use for the free shower cap! Now I can take a shower longer than 12 minutes and not be left in the dark.
Note the use of a screwdriver glued to a screw to hold the flapper in, a miscellaneous piece of rubber instead of a chain, and for the finale, a piece of cellophane to tie it together! 10/10 would stay at this hotel again.