You may wonder how Printing can be an activity. You're right, it's not but this is something you could think about and take advantage of your stay in Koh Chang to bring back with you your own printed articles.
Products in Thailand are quite cheap compared to European countries for example and it could be a good opportunity for you to get your own business cards, own t-shirts with your logo, own mugs with your pictures or any other printable objects.
I have 2 addresses to recommend you!
If it's about business cards, menus, brochures, anything printable on paper material, then go to Eternity Creation Co. which is located in the north of Klong Prao, on the main road, opposite side of Klong Prao Resort. Just between King Tattoo and Koh Chang Gym. Their prices are very interesting and the quality is very good.
If you want to print clothes or any other material, Pasteldesign is the best place you can find in this area. They can print all what you want, just contact them to get an offer.