How to Torture a 7 Year Old

I bought these cheap little "finger lights" at the grocery store for Halloween the other day. The Youngest, aka The Wild Child, found them and has been absolutely BESIDE himself wanting to open them and check them out. I won't let him since they are for a Halloween event we are planning to attend. You would think he was dying with all the drama! PLEASE Mom, please, we need to test them before we go, he says. Can we just try them just for a minute? Please? And so on and so forth. I am standing firm, however; he must learn to deal with delayed gratification. He really is making progress, though; he's respected my "NO" and hasn't opened them anyway, so he's maturing a little bit. There's hope for my boy, there's hope!