The battle rages on.
The battle rages on. DAVE CROSBY/CC BY-SA 2.0 (CAN OPENER); DENNIS HILL/CC-BY 2.0 (SEWER); DEAN HOCHMAN/CC BY 2.0 (TOILET PAPER); PUBLIC DOMAIN

Mundane Madness is a month-long quest to anoint the most overlooked everyday objects. Also check out the original call for entries, and how Round 1 and Round 2 went down.

More than 2,600 readers helped us slash eight marvelously mundane inventions down to our Final Four. You kicked out paper clips, string, matches, and the tape measure.

Here’s where things stand as we kick off Round 3:

Here's how we arrived at the Final Four.
Here’s how we arrived at the Final Four. Blake Olmsted/Atlas Obscura

Many readers have continued to show their support for their favorites. A few have campaigned hard for sewers, which revolutionized public health, but we’ve noticed that paper has emerged as a clear favorite to win it all.

@ckosek waxed poetic, with a pretty mesmerizing gif:

It probably comes as no surprise that at least one librarian—with a near-perfect bracket—is #TeamPaper, too:

Will the showdown between paper and sewers come to pass, or is an upset in the cards? It’s up to you. Cast your ballot below, and use the #mundanemadness hashtag on Twitter to tell us what swayed your vote. The final two inventions will do battle on Friday, March 30.