Yes—there are a few common options. A clear protective filter, such as a UV filter, can act as a secondary barrier for the front element. Many photographers also leave the lens hood on while walking around, since it helps protect the glass from minor bumps and knocks. If you still want to use the cap without losing it, a lens-cap leash is a simple fix: it attaches to the cap and lens so the cap hangs from the camera instead of getting misplaced. None of these fully replaces careful handling, but a filter plus hood is a practical everyday setup, and a cap leash solves the “where did I put it?” problem. If you keep using a cap, putting it in the same pocket every time also helps build a reliable habit.