At the risk of missing your point......you asked from the get go what memorable thing you can do to be remembered. When you follow up that statement by saying she may not always have your name or your handle, it is a bit irksome. WHY would she NOT have your handle?
Wanting to set yourself apart from the pack, you come here looking for advice (none of which satisfies). you have made it clear that anything coming out of pocket is NOT going to happen. Your post lost steam before your third sentence. Audacious you are in expecting a Provider to remember you when you stand devoid of the rudimentary-level courtesy of giving your handle. Maybe you should gain etiquette enough to introduce yourself to her properly to begin with before asking how to be memorable.
References keep Providers safe and they are important. They are a dime a dozen. Getting a favorable reference, however, starts with being a decent human being.