My thought was mainly "ok how can I build a ball big enough for a VR rig for myself?"

After this and the recent conversation about the 'rat shadows' setting in Dishonored, I just keep humming to myself-

♫♪♪ The last that ever she saw him ♫♪♪

♫♪♪ Carried away by the Doom-rat shadow ♫♪♪

Just reinforcing the stereotype that a rat is just a giant mouse