If there are K’Nex on your kiddo’s wish list, get on over to Amazon right now—they’ve got a 400-piece K’Nex value tub for just $12 (free Prime shipping, or eligible for free Super Saver Shipping on $25+).
The next lowest price I’m seeing is $22. For some reason sharp things you step on in the night tend to be awfully expensive, usually. But at this price, maybe you’ll swear less when you step on ‘em. (Okay, probably not. But it’s still a good price.)