Preheat the oven to 400 degrees.
Prepare a baking sheet by lining it with parchment paper, and set it aside.
Unroll the crescent roll dough and lay out the triangles of dough, gently stretching each one out in all directions.
Place a Snickers on each of the triangles of dough vertically, about an inch down from the short, flat side of the dough.
Cut the long pointy tips of the dough triangles off, about an inch below the bottom of the Snickers. Save those pieces of dough for later.
Cut horizontal strips in the crescent dough along the left and right sides of the Snickers.
Fold the top piece of dough up and wrap the long strips around the outer edges of the Snickers, gently pressing to seal shut, and do the same with the bottom piece of dough. Use the remaining strips to crisscross over the body of the Snickers mummy and tuck any excess dough under the mummies. Leave a small space towards the top so you can place eyes after it bakes. 
Take the extra-pointy pieces you cut off at the beginning and cut them into thin strips. Use these strips to add more bandages to each mummy.
Place the mummies a couple of inches apart on your prepared baking sheet.
Bake at 400 degrees for approx 10 minutes or until lightly golden on top.
Remove from the oven and let cool for a couple of minutes.
Sprinkle with powdered sugar, and place the candy eyeballs
Best served warm, but also delicious served room temp!