The strong bowl in the picture on the main screen is easily made.

The materials you use to make it are strips of newspaper and a glue made by mixing up some wallpaper paste.

Blow up a balloon and then begin to put pasted strips of paper on to it, criss-crossing them as you go. It is best if the paper touching the balloon is not pasted.

Get a good thick layer covering just over half the balloon. Then let the paste set, prick the balloon to collapse it, and trim the top edge.

Now you have a bowl that is strong even though it was made from weak materials.