At the second link, no apparent faking there: The glass "harp" guy has a real knack, to be able to get the glasses ringing so quickly.

Drift: The same principle of vibrating the rim of a vessel was recently introduced as a playing technique in the handbell world. Those bells being made of corrodable metal, it's not wet fingers but dry, unfinished 1.25" dowel, held parallel to the handle and firmly run around the rim to make the bell "sing". Nope, not exactly folk, but...