Echo jar, decorative and useful.

A placable item, echo jars would obviously be crafted with echo shards in the same shape as a bottle. With these you could capture sounds by right clicking during the sound effect being played such as cave noises, villager hmmms and piston noises. Upon capture the jar could change texture and could have a tag to show what sound was captured. These could be used to lure mobs away from an area (for example a cat noise would scare away creepers) great if you have a phobia of cats! Or these could just add ambience to a build. Frog noises in the end? Yep! Create an atmosphere of a crowded village without too mNy villagers lagging up the place etc.