@cymaticslab is small — 2,038 followers and 26 posts when we looked — but it is one of the few cymatics accounts on Instagram attached to a physical product you can buy. The bio states the pitch exactly: "Making #cymatics easy and fun with SoundScribe, the wireless #chladniplate kit for everyone."
The same operation runs @CymaticsLab on X (120 followers, 21 posts since 2019) and @cymaticslab on TikTok (67 followers, 441 likes). None of these is a large audience, which tells you something about how thin the specialist end of this subject is on social platforms.
For anyone building their own plate, the account is worth following as a competitor and a reference point rather than an inspiration source: it shows what a commercially finished Chladni rig looks like, and what a manufacturer chooses to demonstrate.