I forgot to close the front door key and gas valve, which suddenly made me uneasy when I went out. If you have time, you can go back and check it, but if you don't, you'll feel restless all the time while you're out. Most of the time, it ends up in melancholy, but I don't mind.
The recommended item for such anxiety is the "Fire Source / Door Lock Checker". This is a plate-shaped key chain with a checklist of items you want to check before going out. This time, I bought it at Rakuten Ichiba, and the price was 892 yen (tax included) including shipping.
You can list 6 items. Choose from the included stickers, or write on a plain sticker if you don't have one.
There is a slider under each item, and when you raise it, a cross is displayed on a pink background, and when you lower it, a 〇 is displayed on a blue background.
Before going out, set all to x, check each place one by one, and set to 〇. It is also recommended to check by voice, such as "hot water supply, good".
The slider is a heavy one that switches with a "snap" sound. It can be said that there is almost no chance of hitting something in the bag and switching on its own.
In today's digital world, there is a sense of security created by the analog actions of moving sliders one by one. It's simple and can be used by children and the elderly. If you are on the go and tend to be anxious, try it!