A friend of mine built a text message to email system for this rural delivery guy for the purpose of letting his office assistant manage invoices, but also allowing him to fulfill orders on the go without talking on the phone as his customers can just text him. Charges him $500 a month for that.
That kind of thing is trivial to do, but can still have a lot of value. Remember, the small businesses don’t automate anything. Excel is frequently beyond them.