I've gotten a few of the high priced PUP attachments, HNM pops, sky pops, and ZNM pops. During the one anniversary campaign where we were getting double items from Flotsam I got some 100 dyna pieces and mannequin parts.
wow that's nice! I mean before today the best item I got was a beastly shank which I thought was tough to beat and a few sky pop items too but I really didn't know Novio earring was a possible drop from it.
My most common drops from this atm are potions and maybe the odd dhalmel pie.
A Beastly Shank and Autumnstone are the only two items of any real worth I've managed to get so far from mine. Most of the time it's just random, terrible food or meds I'd never use.
FYI it looks like the latest login campaign has brought the return of double items from Flotsam. Now is a good time to get your mules access if you haven't already.
Either traveling to Adoulin and getting the Pioneer's Badge which involves finding a waypoint inside a dungeon and then a couple of short CS when you enter the city, or getting Rank 3 in current home nation and obtaining an Adventurer's Certificate. Not sure which is easiest on a low level character, I did all of my mules before the city option was available.