DIY Moon Rocks That Glow and Bounce

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White school glue (PVA), 4 ounces per batch — easy to find at craft stores
Water, room temperature — tap works fine
Borax powder or a borax substitute like sodium tetraborate solution — optional safety notes below
Phosphorescent glow powder (non-toxic) — charges in light and glows in dark
Fine cornstarch or arrowroot, 1–2 tablespoons — helps texture and reduces stickiness
Small mixing bowls and spoons — ceramic or plastic work
Measuring spoons and a small scale if you like precision
Gloves (optional), for sensitive skin or tidy fingers
A tray lined with parchment or a soft towel for shaping
A shallow bowl or jar for charging under a light source
A small airtight container for storage

Gather your tools and lay them out. Wear gloves if you prefer. Keep a towel nearby for gentle messes.
Pour 4 ounces of white glue into a bowl. Feel its soft, sticky weight. Add one tablespoon of water and swirl until smooth.
Sprinkle in a teaspoon of glow powder. Stir slowly so the powder blends and the mix looks evenly luminous.
Add one tablespoon of cornstarch and mix. The mix will thicken and feel less slick. Pause to notice the change.
Prepare your borax solution: dissolve half a teaspoon of borax in one cup of warm water. Stir until clear. You will use this sparingly.
Slowly add the borax solution, a few teaspoons at a time, while stirring. The mix will start to form strings and then clump. Stop when it becomes rubbery.
Scoop the clump onto your tray and begin kneading. Press, fold, and roll until it feels smooth and springy. Keep motions slow.
Shape the dough into pebble shapes. Roll between palms to warm and seal the surface. Make sizes you like.
Charge the rocks under a lamp or sunlight for 5 to 20 minutes. Watch the glow deepen. Test one in a dark room and adjust charging time.
Let the rocks rest for an hour before storing or playing. When cool, place them in an airtight container to keep them soft.

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