[Giraffe]

A close relative of my wife's is turning six, and we're thinking we'll start being those cool relatives who send birthday cards with money in them. We have fond memories of getting cards with money in them as kids. But, since we're super old now, we have no idea what's an appropriate amount to give. Somewhere between $5 and $20, I'm guessing, but that's about as far as we've narrowed it down. I worry that $5 would be like getting a dollar back when I was a kid, but if we send $20 it'll seem weird, since $20 back when I was a kid would have been quite a lot.

Help me out, Raffers.