Font colour of pot name and/or pot balance to change to green on Home page (list of accounts and pots) once the pot goal has been reached or exceeded.
It would give a quick overview of the pots where the goal has already been met and the pots that still need a little help.
Hey @Babbann, welcome to the forums! 
I like this idea, but visually this may cause difficulty viewing the text, especially with red and green as these are significantly some of the harder colours to read text in.
What about if the background of your pot card was to fill up like a jar of water or something? 