How it is done :
If the neck of the container can be handled, you can use a rope to wrap around it. The rope is not thick and you could wrap it without making a knot.
The rope must not be tight when you wrap it around.
The ending part of the rope (whole rope made from one single piece), is inserted somewere. Pull it out a little.
Your hand will not slip and if wet by mistake, the rope will dry.
If you don't use the rope on all surface, you can still grab the neck, but not so well.
If the neck of the container can be handled, you can use a rope to wrap around it. The rope is not thick and you could wrap it without making a knot.
The rope must not be tight when you wrap it around.
The ending part of the rope (whole rope made from one single piece), is inserted somewere. Pull it out a little.
Your hand will not slip and if wet by mistake, the rope will dry.
If you don't use the rope on all surface, you can still grab the neck, but not so well.