This story about President Obama’s first ride aboard Air Force One buried the most important part at the very end:

Also unclear is when the new M&Ms will arrive. Air Force One has
long stocked boxes with the presidential seal and facsimile signature.
But stewards said those bearing the new president’s signature are still
likely months from arriving.

Presidential M&Ms bearing his signature?! I would pay extra for a bag of those. I bet we can balance the federal budget if we sold them worldwide.