While it may seem convenient to place passwords in easily accessible locations, such as hiding a sticky note under your keyboard, this practice does not adequately mitigate the risk of someone finding and using that password. To enhance security, consider utilizing password managers, which are available in both free and paid versions. These tools can securely store and manage all your passwords in one safe location, eliminating the need for insecure sticky notes.
UT does not endorse a specific password manager. Myself and family members have used LastPass, Dashlane, and Keeper. If you want to start your own research into a reliable password manager for yourself or family members, you can start with this Cybernews article.