Popsugar Parenting Gifts For Kids Best Cheap Gifts For 9-Year-Olds The Best Gifts For 9-Year-Olds in 2018 — All $25 and Under! 5 December 2018 by Alessia Santoro View On One Page Photo 15 of 65 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 15 Crystal Growing Experiment This Crystal Growing Experiment ($12) has enough materials for seven different experiments! Crystal Growing Experiment $12 from amazon.com Buy Now Previous Next Start Slideshow Gifts For KidsGifts Under $50Gifts Under $100Gifts Under $25Gift GuideGiftsHoliday