The best replacement for bookshelf is tower speakers.

The best alternatives to bookshelf are rated as following:
★★★★★  tower speakers
★★★★★  floorstanding
★★★★  floor speakers
★★★  floorstanding speakers
★★★  bookcase
★★★  tower
★★  floor standing speakers
★★  book shelf
★  satellite speakers
★  sequelize
★  soundbar
★  monitor speakers
★  computer speakers
★  surround speaker
★  surround speakers
★  floor standing
★  studio monitor
★  in wall speakers
★  floorstanding speaker
★  on the bookshelf
  bipole
  surround
  satellite speaker
  floorstanders
  ceiling speakers

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

Other search terms related to bookshelf and their ratings are:
★★★★★ desk
★★★ cabinet
★★ file cabinet
filing cabinet
toy box
You have in mind a companion for bookshelf and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of bookshelf in all years. Click on graph for more.
bookshelf
tower speakers
floorstanding