I hate wrapping Santa stuff because those presents are usually big and awkwardly shaped. I made a Santa Sack for each of my kids to help solve the problem. It's like a giant pillow case (as tall as they are) with a drawstring on top. We keep them out throughout the month of December so they're often used for sack races around the kitchen and sleeping bags on movie night.
They leave under the tree just like a stocking. During the night, we fill them with their Santa presents and their stockings so all of the treasures are cinched up inside on Christmas morning.
I also use a sharpie and write down the year and what santa brought them on the inside of the bag so they can remember all the fun things they've received. It's a fun way to remember how many happy Christmas mornings we've had over the years.
I'm not much of a seamstress so I tried to keep the bags very simple. To create them, I purchase two yards of 54" wide patterned fabric (I bought a different pattern for each one) and two yards of 54" wide white muslin. The drawstring is created with 3 yards of rope (the satin finish rope works best). I folded the patterned fabric on to itself (right sides together) and stitched up the long sides. I repeated the process with the muslin and then put the patterned sack inside the muslin sack (again, with right sides together) and stitched around the top edge.
From there, I just flipped it around so the muslin sack would be inside the patterned sack and stitched a straight line about 2" below the top seam...creating a pocket for the drawstring. I also stitched a straight line diagonally across the two bottom corners to help keep the muslin inside the patterned sack. From there, I used an exact-o knife to cut two holes in the patterned fabric and then slid the rope inside; tying it off on the ends.
Each sack took me around 30 min to create, at the most, and I'm not a sewer. :) We've had the first sacks I created for at least 10 years and they're still going strong. I promise they're worth every minute. :)