World’s Smallest Postal Service is a fantastic tiny letter transcription service by artist Lea Redmond.
Here’s how the miniature mail service works (available online): You write a letter up to six sentences and Lea will transcribe it onto tiny stationary using a microscopic ink pen. It then goes into a tiny envelope which gets addressed, receives a miniature stamp and gets sealed with a miniscule wax seal with your initial on it. The letter comes with a magnifying glass.
It’s an adorable idea for a teeny tiny gift that makes a big impression.