Quick answer

Drop your Cookie Monster Light-Up Cubes into a water table or bath, scoop them with a cup, and watch them glow. Here’s exactly how to start and what to avoid.

Cookie Monster Light-Up Cubes activate when they touch water, so you don't need batteries or buttons. That simplicity makes them great for messy play where spills are expected. Because each cube glows independently, toddlers can practice scooping, sorting, and counting while the light holds their attention.

The only catch is that the cubes must stay wet to glow. If the water evaporates or you take them out for a few minutes, they stop lighting up. That is normal, and they will light again when put back in water.

  1. Activate the cubes in water: Fill a clean container, water table, or bathtub with enough water to cover the cubes. Drop the Cookie Monster cubes into the water and let them sit for 5-10 seconds. They will start glowing on their own. Common mistake: pressing the cubes or shaking them dry—this does not help. Just set them in water and wait.
  2. Scoop and pour for fine motor play: Give your child a small cup, ladle, or strainer and let them scoop the glowing cubes out of the water, then pour them back in. The cubes float slightly, so they are easy to catch but require a little hand-eye coordination. Checkpoint: dump the water slowly to avoid splashing. The cubes will glow again once resubmerged.
  3. Hide and seek with floating toys: Place the Cookie Monster cubes under a plastic cup or floating toy in the water. The glow will peek through the edges. Let your child find each cube by lifting the cups. This works best in a shallow water table or toddler bathtub. Common mistake: using opaque cups that block all light—use translucent or slotted cups so the glow is visible.
  4. Sort by color or character: If you have other Glo Pals cubes, mix them together. Ask your child to separate Cookie Monster cubes from the others. The different character faces and slight color differences make sorting a natural next step after free play. Checkpoint: do not worry about exact color sorting—just grouping by character is enough for toddlers.
  5. Dry and store properly after play: When playtime ends, pour out the water and pat the cubes dry with a towel. Place them in a dry container or mesh bag. Do not leave them in standing water after play, as that may affect the plastic over time. Common mistake: leaving cubes in the tub overnight—this can cause discoloration or clouding. Dry them right after use.

Product details

  • Cookie Monster Light-Up Cubes 4-Pack: Cookie Monster now comes to life, just like the other Glo Pals that you know and love. Simply drop your Cookie Monster Cubes into water and watch him GLO! No setup or charging required—just drop the cubes into a water table or tub and the sensory play starts immediately.

    Cookie Monster Light-Up Cubes 4-Pack

    Cookie Monster Light-Up Cubes 4-Pack