Very interesting question, Rubycat!
I have a lot of Hayden-Harnett bags, cuffs, scarves, and slg's but these are on my heavy rotation list:
-Currently wearing: Nackie Satchel in Teak, HH carryall in lilac shine, HH Le Punk keyfob in grey, HH Capri eyeglass case in blue floral, Paule Marrot Lido wallet in black patent, Taos Scarf, Black Ramone with 2-tone studs
My HH all-time faves from my personal collection:
-Collection Biblio bag in black
-Bowman bag in poppy
-Voyager backpack in grey
-Wyeth tote in black
-Mosaique hobo in black with red & yam colorblock (Paule Marrot)
-Trophy Satchel in black shine
-Biblio bag in grape shine
-Quorra crossbody (HH x Walt Disney Signature/TRON)
-Ibiza flight tote in red
-Voyager tote in aubergine
-Langley tote in khaki
-Apprentice satchel in black
My current HH new item purchase list (very excited!)
-Terrific Turnlocks camera bag in black vintage patent
-Terrific Turnlocks city messenger in burgundy patent
-Studly flap bag in black
-Ramone cuff in rose and navy
-Celina cuff in maize and phantom
-Cargo Cult drawstring in grey