Now that I think about it, I think you planted the seed about that idea through one of your blog posts last year. Thanks! :)
TONS of Micro opportunities here.
FWIW, I fundamentally believe that smart people tackling brick-and-mortar-businesses-using-spreadsheets will make obscene amounts of money over the long term. (Not only are my products examples of this but, few people know this about me, I actually bought a gas station earlier this year to force myself to feel the pain.)
For anyone thinking about doing anything like this, feel free to reach out - I want to help you. :)
CRM: who's buying from me, what are they buying and what should I market to them so that I can make more money.
Inventory Management: what's in stock, what do I need to re-order, are my employees stealing from me?
I can keep going... :)