These guitar neck rests are the most stable neck rest I have seen. I was using a popular curved bottom neck rest, that worked well, but was unstable on a padded bench. These new neck rests are very stable. They can be used lengthwise, or turned perpendicular to the neck for extra stability.
These were designed and are manufactured in Des Moines, IA at the Woodchip Shop. They are made of solid basswood with felt padding. They are sized to work well for acoustic or electric guitars. They are available in 3 colors - Red, Brown, or Green.