If you have a spare computer fan, 9V battery and a piece of duct tape you can make a portable fan in less than minute. Extremely useful for cooling during during hot days, long trips etc.
How to fix an aglet of shoe laces using heat-shrink tubbing. It’s fast, more durable than an aglet form the shop and lace can be fixed almost everywhere.
Sometimes I want to eat yogurt and I don’t want to wait with it until I got home. So I learned to improvise a spoon out of the tinfoil seal. This trick works well with other foodstuffs packaged with tinfoil seals like pudding, cream cheese etc.
Very simple South American style bracelet made from a decoration of a box of yerba mate drinking set.