Hi Ihor,
Seems like a nice solution if you have that lying around 
I would had never thought about it…I really have no idea what something like that costs here at a hardware store?
If you are as weak as I am, you should also look at what kind of rubber … if you don’t look at it for years (like me) does it dry out and break/crack? I think I think about it a little too much… Although some people still have nightmares about falling guitars…
one of the few good things to come from my country? 
I used this one …those orange rubber rings around the cap…and many with me (was a tip from Justin and another well-known online teacher)
Sorry for the long story. 
… good tip
I’ll post this link below, quite useful in this topic, some easy safety tips 
, but I don’t believe your tip is already there ( I know dubble posting is not the way it normaly So as far as I’m concerned it’s fine only here , I won’t burn my fingers on that to say more ) today 
),useful for people who don’t like buying beer… oh, that’s why I never thought of your idea.
Greetings