The best replacement for heating pad is ice pack.

The best alternatives to heating pad are rated as following:
★★★★★  ice pack
★★★★  ice
★★  hot water bottle
★★  cold pack
★  warm compress
★  electric blanket
★  moist heat
★  ice pad
  hot compress
  heating blanket
  water bottle
  icy hot
  dry heating pad
  ice pack back
  heating pad

Your alternative for heating pad is not listed? Suggest!
Speaking about heating pad, one probably shouldn't forget about icy hot.

Other search terms related to heating pad and their ratings are:
★★★★★ icy hot
★★★★ moist heat
★★ no auto shut off
You have in mind a companion for heating pad and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of heating pad in all years. Click on graph for more.
heating pad
ice pack
ice