Winton's Candies: Delicious Treats in Port A!
They have the best candy on Mustang Island! I recommend the chocolate-peanut butter cups, the candy corn, the white chocolate fudge, the mint drops (I think that's what they're called), and the malted milk balls. The ambiance of the older location (there are two) is not to be overlooked. There are all sorts of humorous sayings, etc. on the walls, and a live rattlesnake in the back of the shop. The newer location is brighter and cleaner, but I prefer the tradition of the old location.
What to pay: Very reasonable prices.
The Islander: Best Souvenir Selection in Port Aransas!
Ahh, this store brings back so many memories! They have a plethora of t-shirts, beach gear, arts & crafts, keychains, postcards, even disposable cameras, and much more.
What to pay: It really depends on what you're buying, but the prices are fairly reasonable.
Shops: Get in the swim
There seems to be a swimsuit and t-shirt shop of every corner near the beach.
Stop in and try on a few.