I rest my wrists on any of the larger sand bags or even my range bag in a pinch. I would stay with bags no matter how you rest a pistol. Pistols tend to bounce on firing with some of the harder surface pistol specific rests and don't give me added accuracy.
Keep it simple and cheap. A Caldwell Deadshot Front Bag works for me.
These groups were shot sitting, two handed and wrists rest on a bag at 25 yards and 50 feet.
The bag suggestion by others is the way to go. I use a Wiebad mini range cube for pistol stabilization. I also utilize the same bag to support the rear/stock of my long range rifle.
The fill material is very versatile...moves when you want it to and locks in when it should. It's also not as heavy as sand.