Horrible Science Creepy Crystals Boys Bring home the king of

Bring home the king of what's-on-the-card

Set up the soft skittles and let your little one have a go at knocking them down with the colourful bowling ball

Crayola Ultra-Clean Broad Line Markers now have an improved Ultra-Clean washable formula

• Featuring lots of different scenes to turn colourful

• Explore the wonders of science through this hands-on STEM educational project

Horrible Science Creepy Crystals Boys Bring home the king ofGrow a creepy crystal tree Create your own diamonds and make crystals that rock Discover how crystals form and foul facts about crucial crystals Contains ammonium dihydrogen orthophosphate, tree growing solution, tree card, Petri dish, colour tablet, seed crystal, round bottle, funnel, limestone rock and 'Horrible Info' leaflet Grow a creepy crystal tree, create your own diamonds and make crystals that rock! Discover how crystals form and foul facts