Coffee sacks are not to difficult to come by (try Reverse Garbage), i just had not had a need to buy one before now. This is what i have done with my fair trade (Rainforest Alliance) hessian coffee sack: upholstered a seat that was in dire need of a face lift.
My son says it’s a little scratchy to sit on but he is a little sensitive to things like that, tags in clothing etc, it hasn’t been scratchy to me.
Here it is where it is currently living, where i can admire it daily and pat myself on the back for being clever LOL. It is a flip top seat that has storage underneath. This is what the seat used to look like, I upholstered it in 2007:
Tips to working with hessian coffee sacks: they fray, they leave little hessian bits on you as you work with it (you can use a razor to shave the finished product to make it smooth), making neat corners is a little challenging due to its thickness, but overall a great experience well worth it, very happy with the result.