Hay Bales do no burn when set on fire.
Hay bales don't burn or fire spread
Hay Bales don't burn
Acacia and Dark Oak Stairs do not burn and cannot be lit with flint and steel
Several blocks made of wood (Signs, Ladders, Chests, Trapdoors, Doors...) won't burn
Dried kelp block do not burn when set on fire
Sweet berry bush do not burn