The “Tie Tea” Mug by Le Mouton Noir & Co.
The "Tie Tea" mug — designed by George Lee of Le Mouton Noir & Co. — is one of those "I wish I'd thought of that" products.
It looks like any plain white tea mug in most respects, except for the two notches at the rim that act as a sort of "cleat" for tying your tea bag around, much like docking a boat. This keeps tea bags from floating away so you don't have to go fishing around in your piping hot beverage for them. A simple solution for a common problem.
The mug comes in right-handed and left-handed versions. Both are $25 at Amazon.