Prepare jello by boiling 1 cup of water
In a heatproof pitcher or bowl with a spout - mix the Jell-O packet and 1 cup of hot water
Whisk until powder is dissolved
Add the cold cup of water
Pour the blue Jell-O into the clear cups and place them in the refrigerator for the length of time it takes for the Jell-O to gel. (This might take around 4 hours)
When the Jell-O is firm, you can start to decorate the cups. (This can be done up to a day in advance)
In a zip tight back, use a rolling pin to crush the vanilla wafers into "sand"
Pour the cookie sand over half of the Jell-O cups
Add decorations to the sand, like stars, jelly beans, and a gummy bear
Push the palm tree into the jello - somewhere besides the bear and push the umbrella in over the bear