Adding curves to a rig

I have a logo made of curves on the chest of a character and want to attach them to one of the spine bones so when the torso twists they stay on the character’s chest.

I’ve dug around but haven’t figured it out and would appreciate thoughts. I’m sure it’s something dumb I’ve overlooked.

Put your rig into pose mode. Select the object (your logo), shift select a bone, Ctrl-P (set parent to) > Bone.

That’s the shortcut. You’ll see the result in properties panel of selected object…
Properties > Object > Relations > Parent > (armature name) > Bone > (bone name).

-LP

That was it exactly, thank you!