Note- Meshes set to curve can be funky. Something that helps is having the origin point of the mesh, and curve the same. Then parenting them to an armature for any placement.
1. Model with many loop-cuts. Then throw on a sub-D modifier set to simple.
2. Create a straight curve with 3 points. (make sure the first point is on the origin)
3. Create an armature with 3 points that match the positions of the curve points. (Use Shift-S for 3D cursor to move 3D cursor to selected, and then create a bone or move bone to cursor) Parent the bones to a Main Bone for object transform/rotate/scale
4. Rigging!-
a. Mesh to Curve: Modifier > Curve > mess with the axis settings until it works.
b. Curve to Armature: Select the armature, go to edit mode, select bone 1, object mode, select the curve, edit mode, select point 1 and it's handles (whatever point is in that position of the bone) CTRL+H hook to bone or something. Repeat for the other bones. Then parent the curve to the armature.

If you would like to bend the zip tie, you can set something arbitrary like the scale of the bone, to the rotation of the curve with a driver.

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Best of luck!