Your Favorite Weapon?

Hey guys I'm back. I don't visit here often but I have question for all of you. What is your favorite weapon for self-defense any why? Think of it like this: If you could only pick one(1) weapon to carry all the time what would be? That's the answer you would give.(pepperspray, keychains,pens, etc. can be included) My answer: my wheelchair of course it's great for throws, chokes, and bashing and attackers usually leave vital areas open for strikes. And don't forgot i've got wheels.

I'm working on using scooter but it's a bit more limited than the wheelchair. But I'll get better with it.