These 56 life-hacks are an assembly from various lists. I tried to remove anything that was too specific to any nation.
1. Use a soda can tab to connect clothes hangers and more efficiently use space
2. Use an almost empty jar of Nutella or peanut butter (or jam) as a dish.
3. Use clips to organize your cables
4. Use empty CD spindles as bagel-sandwich holders
5. Use toilet paper rolls to organize stored cords
6. How to tie a tie (4 different ways)
7. Use an empty (cleaned, obviously) ketchup (or other sauce) bottle for mess-free pancake making
8. Paint keys with nail polish to identify them more easily
9. Unroll paper ingredient holders to increase their capacity
10. Use a rubber band to make wiping your paint-brush easier and less messy
11. How to fold a large sheet
12. Use a straw to cleanly remove the stem from strawberries
13. Take a picture, or do something unusually memorable in connection with, borrowing an object from a friend (or anything else you want to remember)
14. Use a bread tab (or a paper clip) to not lose the end of the tape
15. Use an egg carton to better ventilate a laptop in danger of overheating
16. Use a dustpan to get water from a narrow outlet into a larger container
17. Use a can opener to easily open security plastic
18. Use a shoe hanger to organize cleaning bottles and reduce risks of leakage
19. Use an upside-down muffin tin to make crunchy tortillas in a bowl shape
20. Stack your clothes vertically to have more overview
21. Use a hair straightener to straighten collars and cuffs
22. Use a hair clip to prevent a wire from tangling
23. How to separate the yolk of an egg, for baking
24. Non-leaky ice pack using a frozen sponge and a plastic bag
25. Cut a plastic carton to make a shovel
26. Push on a knot from its loose end (twirl it first) to reduce pressure in the knot
27. Use a clothes hanger to display a cooking book
28. Use toothpaste to clean:
Most contain fluoride and sodium laurethyl sulphate and scrub away most dirt
29. Hide emergency money in a lipgloss or chapstick roll
30. Use bread tabs to keep cords organized
31. Use a carabiner to carry several bags at once (without hurting your fingers)
32. Use empty toilet paper rolls to hold wrapping paper or scrolls
33. Take the little bit of leftover soap and combine it with the new soap
34. When using a microwave (does not harm your food more than other cooking):
Create a space in the middle to heat the dish more evenly.
35. Use nails to avoid having plugs bend
36. Putting your coaster over your beer indicates your seat is taken
37. Using an empty output to occupy your audio input silences your computer.
38. Use a tennis ball/Pringles container to hold spaghetti.
39. Keep documents dry and straight using a plastic bag and a piece of cardboard
40. Use the top of a plastic bottle to keep your opened bags fresh
41. You can hide damage to wood by rubbing a walnut on it
42. Intertwine your cords to prevent them from unplugging
43. Put the top of a condiments bottle on a vacuum to clean your keyboard or tight small spaces
44. Use cheap plastic pearl-beads to more easily identify cords
45. Create a CD case out of a piece of paper
46. Use a muffin tin to serve condiments
47. Use dental floss to cut pastries cleanly
48. Use a clothespin to hold a nail, risk-free
49. Bend a sticky-note under where you drill to catch dust
50. Use spaghetti as a long match
51. Use an old pen spring to keep your cords from bending badly
52. Fold paper to better organize bolts and screws
53. Use a magnet to find nails already in your wall
54. Use a toilet paper roll as a speaker for a smartphone
55. Put a drink in the ice tray to cool that drink without watering it down
56. Take a picture of a sign directing when traveling in countries where you cannot communicate well
