Rubber Bridge conversion on this 1970 Fender (Made by Harmony) : r/Luthier
Cut out a piece of foam (firm but it has some give) and gently slid it underneath the strings. It's a solid, and cheaper alternate to replacing a bridge with rubber to
Kay Rubber Bridge Parlor Guitar w/ HSC 1950s Sunburst | Reverb France
Rubber Guitar Bridge floating Style - Etsy
Dead Guitars: Rubber Bridge – Fine Classics Plugins