A drywall patch can be commonly done with a patch kit; a "California" patch; or a patch with a support board. I test all three methods.
How to Patch and Repair Drywall
How to Patch and Repair Drywall - The Home Depot
Fix-It Chick: Pick Out The Right Spackle For The Job News,, 56% OFF
PatchMaster, The Drywall Repair Specialists
Soundproof Music Room : r/DIY
Drywall Patch Repair - The Easy Way - The DIY Village
Drywall Patch Repair - The Easy Way - The DIY Village
How to Patch and Repair Drywall
Fix-It Chick: Pick Out The Right Spackle For The Job News,, 56% OFF
Glass Cutting Basics