To make into fun shapes like a fish, spiderman,etc.
people use thermal energy to cook and heat our bodies and for hot air balloons
They Do Not use Hydrogen gas to fill up balloons. People use Helium gas to fill up balloons (ordinary party balloons, and big working balloons such as the one used by Goodyear). Helium is Not Flammable. Hydrogen is Flammable and has as tendency to burst into Flame, similar to the German Blimp/Dirigible Hindenburg. Since the US Navy lost Two Helium Blimps in Bad weather; The Akron and the Shenandoah (with a great loss of lives), the US Navy almost never uses Blimps anymore.
People use air for breathing, supporting combustion for cooking and heating, and as a medium for transportation, such as in inflatable devices or hot air balloons.
the use for balloons mostly
Helium
Yes, just don't put a lot of water.
To decorate balloons on a wall, you can use double-sided tape or adhesive hooks to stick the balloons to the wall. You can also create balloon garlands by tying balloons together with string and then attaching them to the wall. Additionally, you can use balloon clips or balloon glue dots to secure the balloons in place.
It's the type of game where you use your character to break balloons. Those balloons would divide in smaller balloons.
To hang up balloons for a party or event, you can use string or ribbon to tie the balloons to a weight or anchor, such as a table or chair. You can also use balloon clips or hooks to attach the balloons to a ceiling or wall. Balloons can also be arranged in a balloon arch or garland using a frame or tape.
Ballons are balls (soccer, tennis etc) or balloons. note. these are the balloons you use at parties; a hot air balloon is 'Une montgolfiere'.
helium balloons
Helium to get them to float.