If you like the budget haptic rig for my father then check out my compact 3DOF motion rig, built over a decade ago specifically for VR and still going strong: https://www.xsimulator.net/community/threads/dx-compact-simulator.5866/
Plus even more extravagant DIY rigs, of all types: https://www.xsimulator.net/community/forums/diy-motion-simulator-projects.22/
Plus Mullvad VPN.