I made a funny mistake, and it cost me £1290

So, short version. I buy costa coffee because it cheap, and they have it in those fancy metal cans. I bought one last year, and used the empty container to store 5,10, and 20 pounds notes. Dipstick me accidently donated one of my costa coffee to one of those food banks which contained the money XD

I thought about it. I was going to go back to retrieve it but I decided....If the person get the coffee, and discovers the money in it than it will help them out. I can always save the amount of money back within six months.