Looking for an oden spot, restaurant or konbini style.

There used to be a small konbini style store on Rosemead that had them, where you're able to throw whatever you wanted in a cup and paid per piece . Great for evening snacking and cuddling while sitting in the trunk.

Any place that has them anywhere in LA, SGV, or SFV? Maybe a convenience store that has it like the one in the pic or maybe a menu item from a hot pot place or izakaya?