Guild Wars 2

A handy list, so you know whether to keep banging your head against a wall or start saving up crests:

Drops (includes bosses, but mostly from chests): Carapace Shoulder Box (champs), Carapace Coat Box (vinewrath), Carapace Glove Box (chests/pods), Carapace Boot Box (chests)

Story: Carapace Headgear Box (repeatable), Carapace Shoulder Box (repeatable), Carapace Glove Box (one-time), Carapace Legging Box (repeatable)

PvP: Carapace Glove Box (repeatable)

Buyable: Carapace Boot Box (requires Requisition Order), all others but coat (freely)

Additions/corrections, post below please

The Silverwastes reward track in PvP is NOT repeatable. So you can only get one Carapace Glove Box that way. This does, however, mean that you can get one from the Story, one from PvP, and buy the last one for 1000 Bandit Crests.