Amazon has This Book Is a Planetarium: And Other Extraordinary Pop-Up Contraptions (Hardcover) for $25 - $5 off with coupon code GIFTBOOK17 [Exp 11/26] = $20 with free shipping on $25+ or with Prime.

Transforms into six fully functional tools including a real working planetarium projecting the constellations, a musical instrument, a geometric drawing generator, an infinite calendar, and a speaker that amplifies sound.