Looking for a briefcase that will be as light on your wallet as it will be to carry? Check out this $35 cardboard attaché case. It’s bolstered by metal bolts and polished wood strips. If you’re like me, you like to bring your morning cup of coffee with you to work. Apparently cardboard is less forgiving than leather when it comes to a mug of coffee loose in your briefcase. Pour your coffee after you take the mug out of this case, not before. I wish I had access to such sage advise as you.