The Blobifier is a purging system much like the one from Bambulab, but specifically designed for the Voron V2.4. With slight modifications, it could also work on other printers with fast z movement.
GIT: https://github.com/Dendrowen/Blobifier
Seleadlab kit: https://s.click.aliexpress.com/e/_DCsTsHL
Fysect kit: https://s.click.aliexpress.com/e/_Ddf2NNX