We have some pet rabbits that are partial to electric insulation. They have nibbled through audio and video cables, and chewed the insulation on power cables.
To preserver a laptop power cord, and for that matter to stop the rabbits being electrocuted, I made a rabbit-proof extension cord.
In Canada flexible armoured conduit is required for wiring up lights etc. in an air plenum, so it is readily available.
It is only single-strand cable, but the covering keeps the bending radius large so it's not a serious issue. I fitted a regular 110V cord-end plug and socket, and clip the socket end to a tabletop so that the unprotected cord does not fall to the floor.
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