You’ll always know which key is which with a set of Escape and Enter Key Covers. Which key is used to open the door? The “enter” key, of course. These key toppers fit on most keys and are made from computer keys so you’re putting keys on your keys which is key if you’re keen on keeping keys on keychains (easy for me to type, right?). $4.99 a set.
CaseBuy® Semi-Black High Quality Backlit Ultra Thin Silicone Gel Keyboard Protector Skin Cover for Samsung ATIV Book NP510R5E NP370R5E NP470R5E NP880Z5E series (if your "enter" key looks like "7", our skin can't fit)
Dolphin.dyl(TM) Replacement Individual Key Keyboard For US Retina Display Pro A1425 A1502 A1398 A1466 Replacement Key Keyboard "Enter" / "Return" (New Version)