I used two brackets VALTER from IKEA piece of wood , 2 screws and old mouse pad.
Step 1: Prepare for Cutting
Step 2: Cutting the Edges
Step 3: Fixing Holders
Glue gun will do just fine.
Step 4: Measure
Make sure that brackets wont cover your laptop fan (if located on bottom of laptop)
Cut piece of wood and drill holes.
Step 5: Wraping Up
Aditionaly you can add soem softpads to avoid scratches.