Speaking of tiny bags, I want to share one of mine with you. This is even smaller than yours!
It is only 5 in X 6 inches! lol! and I just LOVE it! See on the back? I can just clip / snap it over my belt when I have my jeans on. All I can fit in it is my cell, keys, a chap stick, my ID and credit cards! What more do you need? lol! I wear it on the boat, on the motorcycle, when we go camping or fishing. I also use it at fairs and festivals, so I can walk around all day hands free. It does have a cross body strap but I prefer to put it on my belt. So make no mistake, these little bags really do come in quite handy. I am sure you will find yours quite handy as well , and you will be styling the whole time! lol! Teeny bags ROCK!
Is your strap detachable? Because if it is, you can slip the strap thru your belt loops and then clip the bag to your waist! Otherwise you may be able to just loop the strap as it is, and double it into you belt loops. KWIM??
Oh, and by the way, this leather bag is 20 years old and doesn't have a scratch on it? lol!
BRIGHTON Belt Leather POUCH