A short instructional YouTube video (by Jeffrey Jaime, CISSP, uploaded April 22, 2017) demonstrating a DIY method to develop grip strength using household items. The speaker advises hanging a long towel/yoga mat/sheet over a chin-up bar (avoid twisting it to prevent spinning) and demonstrates sequences of pulling up, holding, lowering, and switching hands to train grip.
So to develop the grip strength, if you don't have access to a rope, what you can do is you can take one of these, like a yoga mat or a towel or sheet long enough, hang it over your chin up bar, one of those doorway chin up bars at home. You don't want to twist it too much because you don't want to be spinning on it.
But.
This.
Yourself. Up.
Hold.
Down.
Switch hands, hold.
On.
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