This is a holder for the 2023 quest calendar from sundial games, it also has some pencil holes (2 different sizes) should hold any generic pen/pencil - and has a dice tray so you can keep your whole adventuring set up together on your desk ready to play!

(https://www.sundialgames.com/)

Elegoo Neptune 2

Doesn't Matter

No

i used 20% but use whatever ya want

No special printing techniques required, it prints flat so no need for supports.