The store next to the Town Board (used to be called Belizean Attitudes) stock the Cotton Products range and I've found several nice (plain) T-shirts and cotton/linen trousers. Not as cheap as ON/Gap but not bad, and good quality. Or there's always the internet!

A service of some sort is always going to be your best bet as opposed to a store front where you have to have fixtures and an inventory where all your money stays tied up. If you have a skill that is not already in over-abundance in a location then that is the way to go.
On another note, there is a bowling alley in Maya Beach (where our house is) and it has done quite well. Apparently the owners had Bally come down and install the lanes etc. and train them and one other person on how to fix the pin changers etc. if something went wrong. Also, another enterprising friend started an ice company and it has done well too.

Also, the restaurant business is hard and extremely competitive and if you have never run a restaurant before I do not recommend it.

Casa Picasso looks like a great opportunity to me. Still has good press circulating, fully stocked, fully renovated, all equipment, turn key. The Seller did a fantastic job. But it will require a lot of hard (but fun) work. IMHO

My idea - ICE CREAM TRUCK! Fill it with $1bz to $5bz frozen treats and maybe some $8bz lunch plates. Get a golf cart version for up north, construction/resort workers will love it. Partner up with a cook/server. It's normally hot here and EVERYONE loves Ice Cream. The paletes man may slash your tires though (just kidding). Millions? No. Thousands, maybe?

We call the chicken puff/sweet bread lady the "crack dealer" as she has us hooked in the office.

CBSP

Wait, I seem to remember the ice cream truck (well golf cart actually).
Super delicious Ice Cream.

The hardest thing about having that would be not giving away all the ice cream to the cute little kids with no money.
;o)