California Legal Switchblade.
it’s 2”, legal, of course he can’t wear it to school, and it must have a safety and pocket clip.
You will be the coolest Auntie EVER!
JUST REMEMBER THIS, KNIVES ARE TOOLS.
I think he’d love that, but it might get me in trouble with his folks. Then again, they didn’t blink when I gave him a samurai sword last Christmas.