Use a sturdy spoon: wedge the lip under the cap and twist upward
Use a butter knife: insert the blade under the cap and pry
Use a flathead screwdriver: place the tip under the cap and twist/pull up
Use a key: slide it under the cap edge and pry upward
Use a pair of pliers: grip the cap edge and pull off
Use a wrench: hook under the cap and lever upward
Use a shoe method: place the bottle on a hard surface, hit the cap edge with the heel of a shoe to pop it off
Use a wall/edge method: press the cap against a hard edge and twist the bottle to loosen
Use a rubber glove: grip the cap firmly with a rubber glove and twist
Use a countertop leverage method: press down on the bottle while twisting against a hard edge near the cap
Use a can opener: hook under the cap and pry off
Use a vise-grip: clamp the cap edge and pull upward