video Camera Chest rig stabilizer review by polaroid.

This simple video rig stabilizer is built using 15mm rods and is very versatile for the price. you can upgrade and add on to it easily with cheap parts. and if using correctly can help stabilize your footage a lot better then simply shooting hand held.

looks like these are not as common as they used to be, but I found the two handle version so check that out below.
https://amzn.to/38OitIU