I thought I'd bring a bit of one of my other hobbies to this month's challenge, so the theme for the August Challenge will be "Heraldry".
There's a whole world of possibilites for design there, such as:
- an animal or monster in an heraldic posture,
- a distinctive inanimate heraldic charge (like a fleur-de-lys or one of the many heraldic crosses),
- a tesselation representing an heraldic field division,
- a full shield with a coat of arms on it (fictional or real world),
- a helmet with an heraldic crest,
- an heraldic badge (for example, the Tudor Rose),
- a full heraldic achievement (shield, supporters, helmet, crest),
- a representation of a Japanese mon.
Some examples:
Joseph Wu's Heraldic Skull

Manuel Sirgo Alvarez's Leon Heraldico

Tong Liu's Eagle Displayed
https://flic.kr/p/ojYzwj
Some resources:
Heraldry for Non-Heralds
Basic Concepts of Heraldry
Also try a Google image search for 'heraldry' to get pages of inspiration...
Rules:
-Any regular convex polygon allowed (e.g. square, hexagon, octagon)
-No cutting, no pasting
-Multiple sheets allowed, as long as they're all the same shape
-MC shaping is allowed
-You can submit as many models as you want
Edg will be the judge for this challenge, and will choose the theme for September.