There are a number of survival shovels that are considered to be the best. For example, these are a few of the best survival shovels:
IUNIO Military Portable folding survival shovel
US GI original E-Tool Survival Shovel
SOG Folding Shovel
Gerber E-Tool Folding Spade, Serrated Edge Survival Shovel
Smittybilt 2728 Matte Black Survival Shovel