Answer:
I am used when you jump off a bridge for fun.
I go around in circles, but always straight ahead, never complain, no matter where I am led.
I beam I shine I sparkle white. I’ll brighten the day with a single light. I’ll charm and enchant all I’ll bring the best in you all.
A large oasis in the desert. Come with cash and leave with none. What am I?
I am there when you sit, but gone when you stand. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.