I took my Vmax and my eGo to Ace Hardware and tried different o-rings till I found the ones that fit snugly on each unit.
I have 2 lanyards that have a ~3" siring looped on the end that had clasps on them. I removed the clasps. I secured the o-ring to the string loop. I slid the o-ring on to my units and now I have a Lanyard set up for under $10. You can get cheep lanyards at Office Max or Office Depot.
Thanks for this idea; it seems the best so far. Did you just slip the O-ring onto the body and roll it up near the button?
Has anyone else come up with any other ideas or mods to attach it securely "above" the digital display (under the carto); as in maybe with a screw in adaptor?