The best replacement for cartridge is sand filter.

The best alternatives to cartridge are rated as following:
★★★★★  sand filter
★★★★  de filter
★★  converter
★★  bullet
★★  toner
★★  de razor
★  stylus
★  shell
★  safety razor
★  sand
★  cartomizer
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★  toner cartridge
★  sand pool filters
★  de pool filters
★  sand filters
★  canister oil filter
★  drum
★  sand pool filter
★  eshop
★  de
★  de pool filter
  magazine
  bottled ink
  tn450 high capacity toner
  double edge
  straight razor
  regular black cartridge
  ink cartridge
  spin on oil filter
  earth pool filter
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  toner drum
  sand pump
  mc
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  bag filter
  de filters
  130 grain cartridge
  starter capacity cartridge

Your alternative for cartridge is not listed? Suggest!
Speaking about cartridge, one probably shouldn't forget about headshell.

Other search terms related to cartridge and their ratings are:
★★★★★ headshell
★★ filter
★★ paw print
★★ bullet
You have in mind a companion for cartridge and it is not yet here? Propose!



Google Trends

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cartridge
sand filter
de filter