I use pieces of insulated (or uninsulated) solid copper wire, like house wiring. 12 or 14 AWG. Cut to length and reusable. I use these same pieces for hanging/drying. You can hook the ends to the pot or to the trunk of the plant. Plastic, nylon and other man made materials are superior to organic twine and such for gardening. Less chance of rot and other issues. Scotch tape? My dad mended a small branch on a tree with band aids once. But he wasn't the 'handiest' handyman. <G>