I am SOOOO glad at the responses here! I was a little worried people would think it was stupid!
But as for the specific suggestions... What I like the sound of most was the 'little statues' idea. I've taken that and run with it to come up with:
1) We go to An'jhali to *confirm* the ceremony first, to ensure she (and Thalar) are 'down' with the idea...
2) Then we make three little wood-carved (doll sized) statues of each of the Ferals, we then decorate them, gold for Mirual's (she definitely deserves something a little better, she took the biggest risks after all - maybe make it ever so slightly bigger as well?), and silver for Orrul and Ruiuf. This should be an LA action as well, just because its too 'story mode' to take up a whole turn of trade-work, it would still need crafters to make sure it happened and the result was of the best quality though...
3) Once the items are finished (and Mirual has sufficiently recovered), we do another LA round where we have a *public* (In a park area? The town square?) ceremony at which An'jhali presents the three with their 'statues' and gives a speech about how much we value what they did for us (preferably including something about how we have come to think of them as equals, etc, etc).
So, there we go, three steps, three LA actions, and a result... Unless anyone finds any 'glaring faults', I going to work on developing this plan more fully, Suggestions/advice by all means encouraged!
(I don't want to claim this 'project' as mine or anything, its from all of us to the Ferals - I just suggested it first).