The simplest gauntlet I could make, still looks good!
Step 1: Materials
Step 2: Shaping Up
Bend the cardboard.
Shape it to your hand, and cut triangular pieces from the bottom.
Step 3: Colour
Duct tape the piece.
Step 4: Attachment
Poke four holes in the corners.
Put brass fasteners in the holes.
Push each fastener into the glove. To close the fasteners, you'll have to put your hand into the glove.
Step 5: Finnish
Super simple, and easy.
I'll be tweaking it later.