Disclaimer: Please note that no Tribbles were harmed in the taking of that photograph at last year's Star Trek Las Vegas convention. Please also note that Tumerboy (AKA TacoFangs) did not eat these Tribbles as they were not [Tribble [TACOx2]]s. These Tribbles whereabouts are currently unknown, though. If found, please contact the Las Vegas Office of Missing Tribbles.
Completely forgot about the Ushaan-tor, that's another one Starfleet could use. For Romulans, the only one, besides the Reman blade weapons, is the Teral'n which appeared in the 2009 Star Trek film and the Countdown comic.