Here are 5 useful everyday tips that can be applied in various ways:

1. How to Store Leftover Pizza
   If you want to store 2 pizza slices, you can place them alternately to create a rectangular shape. This method is simple when you're too lazy to wrap each slice individually. For more secure storage, you can wrap them with plastic wrap and place them in a ziplock bag for perfect preservation.

2. How to Safely Open a Canned Lid
   Opening canned goods can sometimes cause injury when pulling the lid. To avoid this, use a spoon or fork to hook onto the can's lid and apply the lever principle to open it safely.

3. How to Clean Dusty Window Frames
   You can clean window frames using newspaper and a wooden stick. Fold the newspaper to fit the window frame and moisten it with water. Insert it into the frame and use the wooden stick to move it around and clean the dust. This method is more effective when dealing with wide frames or a large amount of dust.

4. How to Clean a Frying Pan with Apple Peels
   Leftover apple peels can be used to clean frying pans, especially for removing scorched parts, foreign substances, and grease. Simply place the apple peels in the pan and boil them to clean it.

5. How to Repair Worn-Out Knees in Jeans
   Over time, the knees of jeans can wear out, making them uncomfortable to wear. You can use leftover soju (Korean liquor) to fix the worn-out areas. The ethanol in the soju softens the fibers, and using an iron helps restore the fabric’s elasticity, making the jeans wearable again.