Bed warmer (8,7)
I think it could be either:
electric blanket
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bed warmer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for electric blanket that I've seen before include "Bed warmer" , "Bed heater" , "Provider of extra bed heat" , "this might warm you up" , "cover at night" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bed warmer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for hot-water bottle that I've seen before include "night heater" , "comfort in retirement!" , "Bed warmer" .)