

Ive seen people do it with pool floaties as a very colorful and less destructive demonstration.
If destruction is your aim and physics is the concern, a plain steel pipe will do just fine.
If your 'merican, you can also generally open carry while on a bike. A shotgun on your back or a pistol on your hip will likely work wonders.
OP, If you dont have a proxmox vm template ready to go, here is a great starting place using cloudinit:
https://github.com/UntouchedWagons/Ubuntu-CloudInit-Docs
You can use this with the proxmox gui cloudinit config as well to add your ssh key to each vm/etc.