Step 2: Folding

Picture of Folding
Now turn the paper over and fold in half whichever way you want. (unfold)

Step 5: Folding

Now the paper should look like a diamond shape. fold the two outer corners in. Repeat on the front and back.

Step 6: Folding

Now the most complicated part, at the bottom of the balloon their are two corners that stick out. Fold these into the two triangle flaps. Repeat on the front and back.

Step 8: Using

Now you have a cube shaped balloon. you can fill with water or save it. Since it is paper it will absorb water and get mushy so throw fast.
that was reallly cool!!!!!! it blew up so fast! this progect was really fun i'll have to teach it to all my friends! thanks!
it is really hard, i think there is a certian way you have to fold it in the last step, not just any way you want to. but i am not that good at origami, so i couldnt tell you which way. :)
uh....... well....... that was chllenging. i think this triangle thing is called some kind of base and you cant fold the paper in half any way you want to. i had to change the way i folded mine to make it work. the progect is working good so far though. :)
it was ok. it was actually pretty easy!
oops! i wanted to post my last comment on the next step! oh well, now you know
toddjwood4 years ago
If you make it out of wax paper won't it last a bit longer before getting 'mushy'?
Just a thought
TheBat4 years ago
 A detail missing here is to do four total folds up, not two. In other words, fold the top flap's left and right corners up, then flip paper over and repeat for the back flap's left and right.
that  is  hard  i  did  you  that
Brennn106 years ago
Wouldn't a better title for this be paper water bomb? It doesn't seem like much of a balloon to me.
Whitedude0728 (author)  Brennn106 years ago
that works also
They just call it that because you have to blow it up.
Agreed. I make these all the time just to throw around and kick and play with when i'm bored to death in class.
chardster6 years ago
Whitedude0728 (author)  chardster6 years ago
thats cool but mine just unfold when i do it
Hiyadudez6 years ago
kool, ive seen it b4, but yours was more clearer than other ppls, but I made about 20 of em' :) and launched at my brother with my friends, HaHa :]
DaNerd116 years ago
actually, mine dont get soggy on the outside, only on the inside, they last like 10 minutes before the turn to mush. what kind of paper are you using?
Whitedude0728 (author)  DaNerd116 years ago
normal printer paper
hm,wierd, so am i
......this has already been posted......a couple times i think......
Whitedude0728 (author)  explosivemaker6 years ago
ok, good to know?