I'm talking... books, stationery, furniture, assets, swag, tools, gadgets etc
Present & Correct is a good variety site for a lot of designerly things.
Park Life in SF!
http://actualsource.org/ has always has a great selection of up to date publications & swag.
In terms os stationery I'd say Muji's ink pens and sketchbooks only. Their quality is astonishing for the price tag ¯_(ツ)_/¯.
I always loved Digital Fix in SF, but just found out they're closing :(
If you're ever in Seattle, Peter Miller Books is a dreammm. Their online store has a lot of great stuff as well: http://www.petermiller.com/
I dig the note pads from https://knockknockstuff.com/
They sell them at barnes an noble.. but then again they also sell moleskins.. but basically buying it any other way is cheaper. :p