Probably as a possible cost-cutting move (and perhaps I'm a cheapskate for having bought the thing in the first place,) Dahon must've thought it would be a good idea not to provide bottle cage bosses anywhere on the Vybe's frame.
Because I'm not brave enough to drill my own holes in the frame and tap them out, a third-party solution like
Topeak's cage mount was handy for a while. With the only practical place to install it being the lower handlepost in a vertical position, though, the bottle tended to pop out if I hit a pothole hard enough, which is distracting and inconvenient, not to mention just plain ugly:
The bike already was up for sale. Being strapped for cash, I wasn't about to spend any money buying new gear, no matter how inexpensive. I needed to finnagle a setup using whatever I had lying around, and one that I could easily undo at any time.
Cannibalizing one of the other new Topeak cage mounts I had, I screwed together a strap that's long enough to go all the way around the main frame tube, avoiding damage to the brake and shifter cables that run along the bottom:
The four rubber pads kept the straps away from the cables, while ensuring that the two straps are screwed together at two points instead of one:
All I had to do next was screw the base down, locking the two ends of the straps together, attach the cage base, and screw on the cage:
The bottle was more secure, and at once more accessible and out of the way. It also looked better!
Despite having used some rubber strips, I still ended up scratching the finish, which is a bummer!