We want a metal keychain that will be around the theme "MOLON LABE" and a Spartan helm.
When designing for a metal keychain, think in terms of raised and recessed metal, and cutouts. We don't need color.
Molon labe (Greek: μολὼν λαβέ molṑn labé), meaning "come and take [them]", is a classical expression of defiance. According to Plutarch, Xerxes I, king of the Achaemenid Empire, demanded that the Spartans surrender their weapons and King Leonidas I responded with this phrase.
We are looking for various creative designs. We'd rather have 3 very different, creative designs than 15 designs that are all minor tweaks of each other. (At least in the first round.)
We don't want the actual greek, since most people can't pronounce it. But something of a hybrid like: ΜΟΛΩΝ ΛΑΒΕ might be OK.
Be creative in how the text is displayed and whether or not to incorporate some kind of spartan helm.
Understand the audience...folks that will buy this are people who are against the government seizing their weapons, and this statement is a defiant one in line with the Spartan attitude. Do some googling about molon labe images and you can see some things that might spark your creativity.