Advice on old credit union account

I currently have an account with a local credit union which I used for handling my rental property affairs. I have since sold the property.

Once everything winds down in a month or so, I will have around $60 left in the account. They require $25 minimum to keep the account open, but don't pay interest unless the balance is $100 or more.

I also have with that credit union a MasterCard which I used on rental property expenses, it has a $4,000 limit. I only owe around $425, of which $65 will be paid in April and the balance (once it hits the statement) will be paid off in May. There will be no more expenses on the card.

I'm at a point in my life where I won't be going back into owning rental property.

I'm seeking advice on which option to pursue:

Option 1--close the account and cancel the credit card.
Option 2--go ahead and deposit another $40 to put the balance over $100 so it draws interest, and keep the credit card for emergencies.

(I have three other general use credit cards: one with a $15K limit which is my primary one, one with a $10K limit which I previously used for rental property expenses but I only rarely use it, and a third with a $17K limit which I once used for an expense which is now totally paid off and again I rarely use it. The first two are with the credit union where my personal accounts are.)

Open to any suggestions on this.