Basically something where you and some mates could all have access to this ‘pot’ and all spend money from it instead of your account.
My main reason I think this would be good is say you are all at an event and you all place £20 into the pot and then only one of you has to go to the bar or something.
I think some people call this a ‘kit’ but I’m not sure off the top of my head.
It’s a kitty where I come from 
It’s a pint glass 
here. It’s awkward to get cash (let alone cards) into a cat.
That’s it 
At the risk of causing offence…
Jesus: “Bring me the water, and I shall turn it I to wine.”
Disciples: “We’re not falling for that one again JC, you can put a fiver in the kitty like the rest of us.”
My main reason I think this would be good is say you are all at an event and you all place £20 into the pot and then only one of you has to go to the bar or something.
A shared tab isn’t exactly the same, but does this sort of stuff well enough (imo).
Sounds like you’re asking for Shared Pots.
You can vote for Shred Pots here: