Dear friends with 3d printers and Engineers and Medical Experts. Or people you know who someone who is or has a 3d printer. Here's something you can do :)
Poland made it's own opensource Ventilator: https://www.youtube.com/watch?v=5AAjVFM0t0o
And if you are an Engineer, or Medical Expert and can/would like to contribute the project, more info here: https://VENTILAID.ORG