Harmony hub IR blaster

Does anyone have a good source for ir blasters that fit the harmony hub? Looking for a discrete stick on one so I can hide the hub behind the TV.

I've since switched back to the blaster that shipped with the harmony, but when used the stick ons they were plugged in with a Monoprice 107121 2.5mm Mono Plug to 3.5mm Mono Jack Adaptor.