The best replacement for dividers is partitions.

The best alternatives to dividers are rated as following:
★★★★★  partitions
★★★★  screens
★★★★  borders
★★  free standing screens
★  floor screens
★  room screens
★  panels
★  privacy screens
★  combiners

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

Other search terms related to dividers and their ratings are:
★★★★★ folders
★★★ sheet protectors
★★ storage
You have in mind a companion for dividers and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dividers in all years. Click on graph for more.
dividers
partitions
screens