5 life hacks invented by lazy people - I only realized now how useful they are

The little tricks that only lazy people could come up with are actually mostly handy life tips. Everyone is welcome to add more!
1. About mood: if you are unhappy, eating something sweet and a banana will make you feel a bit better. At the same time, bananas contain potassium, which has certain benefits for the heart.
2. If you do not have a funnel at home, you can roll up a piece of good-quality paper to make a temporary one. Pouring rice, beans and so on is still no problem. If you are as careless as I am, you can also use it to pour oil. Once I poured too much cooking oil, and that was how I got it back into the bottle - the paper was clean and it did not leak.
3. This is what my mother taught me. When you come across a glass jar that will not open, such as the common chili oil jars in supermarkets or canned syrup fruit and the like, you can use a small pair of scissors, insert one side into the gap between the metal rim of the lid and the glass jar, and slowly pry it a little. You need to use force and feel the air go in. Once the air pressure is balanced, it opens easily. Well, of course, if there is a man at home, it solves itself automatically. Note that it is not inward: after inserting one side of the scissors, the end you are holding should go outward. Like a lever. Be careful for safety.
4. Many people know this one. When packing luggage, if the suitcase has no space left, socks can be put inside shoes.
5. Since usually no one helps me open pull-tab cans, and I do not keep long nails, I am fairly helpless. At times like this, I use the bag from a pen refill, or anything that can pass through the ring of the pull-tab can - a strap, paper, anything usable will do. Note that the contact surface with the ring must not be too small, otherwise it takes too much effort. First lift the ring, thread it through, then pull it open~
Yes, although many of these are things everyone can do with ease, I am still being clever and summarizing them for everyone. All you strong people and life-skills experts, please ignore the last two.