Thanks to @Zapp @Hyr0n and the ANDnXOR badge team for the suggestion of custom printed dye sublimation from CustomLanyards4All. We selected the doubled ended lanyard with plastic j-hook upgrade to avoid the metal hook from shorting out any connections:
We ordered quantity 330 lanyards to have some extra in case of any issues. The planned number of badges is 300.
The shipment just arrived today!