First, you will need to prepare your water beads.  Pour 1 tsp water beads into the empty water bottle and add 2 cups of water (follow the directions that come with your water beads for best results).

We already had our water beads expanded, so we added them to the water bottle.  This is great for fine motor skills for your child!

We filled our water bottle about 3/4 of the way with the water beads.  You can do more or less.

Blow your balloon up about halfway. Then you will put it on the opening of the water bottle.  You will lose a little bit of air, but that's ok.

Next, squeeze your water bottle multiple times to force the beads into the balloon.  This is perfect to build strength in little one's hands.

Tie the balloon.

Now your squishy ball is complete.

Squeeze it!  A great object for sensory play and hand strength.