Omaker Official via Amazon offers the Newisland 65-Piece Musical LED Ferris Wheel Building Set for $21.99. Coupon code "MXHTOHZE" cuts it to $10.99. Prime members get free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $4.75.) That's $11 off list and the lowest total price we could find. It features flashing LED lights, popular rhymes, and waterproof non-toxic materials. It requires two AA batteries (not included).