This one is made in a 2 x 2 x 4 box. The bottom (shorter) is filled so only used the upper (taller) portion of the plastic box.
My club loved this so much, they asked me to teach as a project. This one is made in 4 x 4 x 4 cube.
The bigger area allowed for making a stream. I used white glue for this water.
If you enjoy my website, please consider making a donation via PayPal.me/minismallpackages23. Thank you!