I am looking for actual names already in use, not names you think would be great, please.
I’ll start off with one that is just a mile away-The Dime Store.
We stopped at one of several “Maggie’s Farm” dispensaries in Colorado a few years ago. Our “budtender” didn’t know where the name came from. 
“Mood”
Famous Bob Dylan song.
I (mid-60’s) and my wife (also mid-60’s and not a Dylan fan) knew that. Our budtender (mid-20’s) didn’t. We had an enjoyable time explaining it.
Buddeez, Happy Goat, RISE, and some classic rock allusions - Grass Roots (a band name), and The Shady Grove (a Quicksilver Messenger Service album).
Bloom.
There’s literally hundreds in NYC. Some fun names: Just a Little Higher, The Travel Agency, Dazed, Flower Daddy, Happy Buds, Flower Power, Indoor Treez, The Flowery.
Sugar Shack, Mr. Nice Guy, Moss Crossing, The Medication Station, Hashstoria (pretty sure this one started in another part of Oregon, but we have an outlet here), Nectar, Space Buds… I could go on for awhile.
Here in southern New Mexico there is Baked Chicken. Next door is a cafe/coffee house called Roasted Rooster. Same owner, but separate businesses. Inspiration for the names is the fact that they converted an old egg farm into an indoor growing operation.
Visited one in Portland, Maine named SeaWeed.
There’s one south of me, “The Bakery”. I wonder how many went in not knowing what treats awaited.
All About Bam
Best Budz
Buffalo Dreams
Canna Cabana
Carry-on Cannabis
Dank 716
Flynnstoned
Good Life Collective
Green Arrow
Green Comfort
Green Philosophy
Happy Goat
Happy Times
High End
Hunny Pot
The Joint
KushMart
Misfits
Mrs. Green’s CANNAry
Offside Cannabis
Pot Spot
The Shady Grove
Star Buds
Trippi Treats
Couple in my neighbourhood one called, ‘J’ and another called ‘Your Highness’.
Not particularly original, but claimed to be the largest dispensary in the US.
Planet 13 in Vegas.
I visited when I was in Vegas for work. Impressive.
The ones in my town all have boring, vaguely medical-sounding names.
Shady Grove is a traditional Appalachian folk song. It was (& still is) popular with “old timey” and bluegrass musicians before being electrified by Quicksilver and others.
Oh, sure. But Quicksilver was a Summer of Love era San Francisco band and was known for drug imagery in their songs. Their first album contained “Gold and Silver”, originally titled Acapulco Gold and Silver, after the pot strains, until the record company said no way. I’d guess most boomers or lovers of that era’s music would make the connection right away.
Bummer. The ones I … er, my friends … patronize have mundane names. Trinity, Ascend.
The Friendly Stranger started out as a basic head shop long before they got licensed to dispense.