If you are to lazy to use your standard Hand-Pump, you can use this tool for your Dyson (V8, 9, 10, 11, 12, 13, 14, 15, 16) instead.
You need:
A Dyson,
A 27mm Gasket,
A 3D Printer :).
I only hotglued the gasket into place and then it's finished.
I used:
Vac Bags:
Gasket:
https://www.amazon.com/Houseuse-Gasket-Rubber-Washer-Grommet/dp/B075YV1BW4