In our household, we were placing our keys in multiple places, which presented a challenge when trying to locate them. The other issue we had was having a single place to put mail. My wife would put my mail on the kitchen table, living room chair, or on my desk. I would put her mail on the kitchen table or her desk.
I decided to create a solution that would allow our keys and mail to be placed in a single place. This solution can be mounted on the wall with screws (I included pilot holes) or with double sided tape (https://www.amazon.com/gp/product/B091DNKSTV/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1)
I also wanted to use this holder as a message center. I purchased a magnetic whiteboard to cut and apply directly on the mail slot (https://www.amazon.com/gp/product/B08WWSZWFQ/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1).