Cork Design's website compares the feel of the tie to the texture of nubuck suede. Find the tie here; it is $50. The belt, which comes in three cork colors and lengths and has a silver nickle buckle, also has that nubuck suede texture. The belt is $40; find it here.
Cork Designs primarily makes a line of designer handbags -- obviously, completely made from cork. Based on your office environment, and your love of cork, I think carrying a cork bag or wallet might be acceptable. My favorite of their handbags is the quilted Chanel-inspired zipped bag (pictured). It's 14" long at the bottom and 6" deep. The bag is $145 and comes in five cork color varieties; find it here.