Waybar is an highly customizable Wayland bar for Sway and other Wlroots-based compositors, such as Hyprland or River. The many available functionalities of Waybar are organized in modules, which can be easily configured and styled.
wayland
How to set desktop background in minimal environments
Graphical environments on Linux can basically be divided in two main groups: full-featured desktop environments such as GNOME, KDE Plasma or XFCE, and barebone, minimalistic window managers, such as i3, openbox, or sway. The former come with a set of applications and utilities designed to work well together, while the latter are meant to perform just one task (or little more): managing windows. When using those environments additional functionalities must be implemented via separate tools.