To make a cup lighter, you can remove some of its contents, such as liquid or solid items. Alternatively, you could replace heavier items with lighter ones, like substituting water with air. Using a lighter material, like foam instead of solid objects, can also achieve this effect.
Helium.
You can put a hole in the wooden box to make it lighter. By removing some material from the box, you will reduce its weight.
You can put a hole in the wooden box to make it lighter by reducing the amount of material in it.
holes
A hole!
A hole can be put into a box to make it lighter. By removing material from the box, its overall weight will decrease.
You put water in a cup then you put any color you want to put in the cup then you get a spoon and mix it up and put what you want in the cup and lat it sit in there
you can put lemon juice in it, and it will get lighter in the sun. that's what i did and mines almost drity blond. (:
A Hole
Termites.
a torch
You can put a small piece of flint and steel inside a box to create a spark for lighting a fire. Alternatively, you can place a lighter or matches inside a box to provide a convenient way to light objects.