The best replacement for foils is balayage.

The best alternatives to foils are rated as following:
★★★★★  balayage
★★★★  highlights
★★★★  all over color
★★★★  streaks
★★★★  cap
★★  tint
★★  block colour
★★  full head
★  all over colour
★  full foils
★  meche
  easi meche

Your alternative for foils is not listed? Suggest!
Speaking about foils, one probably shouldn't forget about dark hair.

Other search terms related to foils and their ratings are:
★★★★★ dark hair
★★★ black hair
★★★ shellac
★★ red hair
You have in mind a companion for foils and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of foils in all years. Click on graph for more.
foils
balayage
highlights