A candle isn't safe in an enclosed pumpkin, so use a battery-powered LED light instead.
Slice off the bottom of a pumpkin and scoop out seeds. Using a set of spade bits, drill holes of different sizes all over pumpkin.
Place plastic mice on newspaper and paint gold, turning to coat all sides; let dry.
Pin critters into place on pumpkin, both on surface and inside larger holes, as shown. Place a flickering LED light on your table or mantle, and put pumpkin on top.
Optional: Use this as a centerpiece for a fruit-and-cheese spread.