Step-by-step tutorial
Step 1
Hot glue the bottles end to end.
Step 2
Place a marble into each bottle. Cap the bottles. (Decorate them if you want!)
Step 3
The point of this puzzle is to get both marbles into both bottle necks at the same time. Can you solve it? Once you can, challenge your friends!
Tip
(Hint: Place the puzzle flat on a table, then spin it. The marbles will fly outward!)
