It is past time to give you a list of various items collected in my visits to various supportive parties around the country. I've some monetary donations, as well.
Item one: A goblin-made formal toasting goblet that neutralises most poisons (though not, I gather, one of the ones most commonly used by Goblins during the later Goblin Rebellions.) They might appreciate the return.
Item two: An intricate puzzlebox, deemed insoluble by the best wizarding minds of the last four centuries. The goblins might like a go, perhaps?
Item three: A brooch whose gem shifts colour in accord with astrological alignments, calculated according to the Heidelberger Schicksalsbuch manuscript (now outdated, naturally, but quite possibly of interest to the centaurs.)
Item four: Metal from a meteor fall near Hatford in 1628.
Item five: A cave-digging device, magical, of potential interest if you wish to make a treaty with the giants.
Items six through eight: Trinkets producing magical effects for entertainment - lights, sounds, and so forth. Ditto. I rather like the one that produces a flock of birds, personally.
Item nine: a children's music box that when playing, generates a field of some substantial radius that stuns anyone intending harm to children. The Black Lake merfolk might find this particularly reassuring, if it can be made to play underwater.
Item ten: A fishing spear that when blood-bonded to the owner will allow the owner to perfectly track fish cut with it. Possibly of use with the oceanic mer.
Item eleven: A carved wooden tube, about six feet long, brought back from Australia as a trophy. The current family has no idea what it does, but as soon as I asked about odd magical items they might be willing to donate to the cause, they insisted I take it, as it makes them uncomfortable. (I do not believe it is Dark magic, but there is something exceedingly odd about it.)