I've amassed a few things I want to exchange for crowns OR prismatic pylons OR a extension cord:

Weapons:
Shivermist Buster CTR: High (6.5kE)
Divine Avenger (5kE)
Voltedge ASI:L (5kE)

Shields:
Heavy Node Slime Wall (200kCr)
Toasty Node Slime Wall (200kCr)

Trinkets:
Elite Slash Module [Sword: Damage Medium] (125kCr)
Elite Quick Slash Module [Sword: Attack Speed Increase Medium] (125kCr)
Quick Draw Module [Gun ASI:L] (40kcr)

Costume:
Tabard of the Turqouse Rose (100kCr)
Iron Dragon Helm (50kCr)

Accessories:
CozZzy Halo (850kCr)
Circuitry Eyes (115kCr)
Floating Emeralds (950kCr)

Send me a message if you're interested!