Fun and unique gift for the 9-and-up child that likes to build things with moving parts.
The code is TOTY50. Sorry, no free shipping if you use the coupon, but even with shipping this is still a good deal on a rarely discounted item. Shipping starts at $5.95 and scales up to $10.95 for orders of $100 or more. Looks like the coupon works on their other toys as well.
Playmonster makes, among other things, these crazy, Rube Goldberg-style marble race building kits under the brand name of Marbleocity:
LInk to kits [playmonster.com]
These are building kits with precision punch-out wooden parts requiring white glue, and the larger kits can take a few hours to assemble. The bigger kits retail for $59, and I've never seen them discounted below $40. It's probably happened, but time machine deals don't count for much on this forum unless they happen regularly.
For $7.50 (after coupon) you can add an optional battery-driven motor to your finished kit so it runs continuously. And, you can link some of the kits to one another for added fun.
Hope someone finds this useful.