There are a few things to make sure that you check out while at the Avenue of the Giants. A day can easily be spent here with the beautiful redwoods.
Chapman's Gem & Mineral Shop & Museum is an impressive 7500 square foot showroom. This Showroom contains crystals, fossils, minerals, carving, jewelry, stones, shells, bread, books, and a ton more cool things to check out. They are open seven days a week from 10 am to 5 pm.
Make sure that you don't forget to grab your friends a souvenir. Their One Log House & Espresso & Gifts makes this really easy. The shop is located in a unique house that is over 2000 years old redwood log house. They also cave a little deli where you can grab some espresso, deli sandwiches, ice cream, and more.