Toothpicks is an awesome Bluetooth device manager for macOS. With Toothpicks you can add your favorite devices to the menu bar and connect/disconnect them with a single click. Alternatively, define a connect/disconnect hot key for each of your devices.
SeeVS (See Vaccine Status) is a free and open-source macOS menu bar app that can automatically check for available COVID-19 vaccine appointments at CVS stores.
