I've been stealing my bf's mousepad since his is ergonomic (provides wrist support) while mine does not...
Instead of buying new one, I decided to sew one instead!
For the mousepad:
Using my old mousepad as a guide, I cut out 2 pieces from heavyweight interfacing (the kind you use to make bags). You can fuse them together if they are fusible, or just sew a few lines through the 2 if they are not.
Next I cut a piece of fabric slightly larger, then used fusible tape to secure the fabric onto the 2 layers of interfacing. tada! done!
For the mousepad cushion:
I cut two pieces of fabric, 1 for the top, 1 for the bottom, 8.5 x 3.5
with right sides together, i sewed all around leaving a small 1" gap on one side
clipped corners, turned inside out...
now here's the fun part! i filled it with rice! you can fill yours as much as you like! i have small wrists so i only needed about a cup of rice.
finally top stitch all around and the opening.
check mine out in its natural environment!