wldash is a convenient dashboard and launcher for Wayland (requires wlr-layer-shell-unstable-v1 support), allowing easy access to things like date and time, backlight and volume control.
git clone https://github.com/kennylevinsen/wldash
cd wldash
cargo build --release
cp ./target/release/wldash /usr/local/bin/
wldash
Run wldash print-config to see the current configuration. Use that as template to write a new one to ~/.config/wldash/config.json. The widgets, their size and layout can be configured as well.
To make wldash toggle itself every time it is started, instantiate with wldash start-or-kill.
To run arbitrary command, type !. To use built-in calculator, type =.
Hint: Try to scroll, left-click and right-click on things.