It would be a race against time. Figuring out a way to secure the funds would take up a good part of the day. There has to be some more ground rules to get a good idea what is possible.
Unlimited stacks of cash would be the easiest way I think.
Open another bank account within the same bank. Transfer large sum to it. Being from the same bank, the transfer should occur same day. Then start buying stocks/bonds/investments for the rest of the day in case it doesn't go through.
Most are much higher than that I think and are probably closer to per day. And that’s what you can self-service online. A call to a bank or showing up in person solves it.
Not for the normal person that doesn't normally have a large account. I mean you can try explaining to them all that money that magically appeared isn't fraudulent and to just let you transfer it out...
I think there’s some willing suspension of disbelief that is required as an element of any question like this. You have infinite money and everyone takes it as face value.