The best replacement for plugs is sod.

The best alternatives to plugs are rated as following:
★★★★★  sod
★★★★  gauges
★★★  tunnels
★★★  platinum
★★★  tapers
★★★  ear muffs
★★  punctal plugs
★★  cold plugs
★★  muffs
★  patches
★  regular spark plugs
★  spades
★  bare wire
★  bosch spark plugs
★  platinum spark plugs
★  copper
★  earmuffs
★  coil pack
★  spark plugs
★  iridium spark plugs
★  iridium plugs
★  restasis
★  cold spark plugs
★  champion
  hair casts
  transmission
  hair transplant
  autolite
  fuel pump
  non resistor
  corks
  platinum plugs
  bosch
  zoysia sod
  liners
  non resistor plugs
  ngk
  denso iridium spark plugs

Your alternative for plugs is not listed? Suggest!
Speaking about plugs, one probably shouldn't forget about earth wire.

Other search terms related to plugs and their ratings are:
★★★★★ earth wire
★★★★ screws
★★★★ oil
★★★ anti seize
★★ lights
★★ stretching
★ no earth wire
You have in mind a companion for plugs and it is not yet here? Propose!



Google Trends

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plugs
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