Keeper will take:
500 silver flute
750 two potions of gaseous form
150 potion of bulls strength
Leaving him with:
41174.5 for Ne'charri (Doby) to go shopping with
Here is a link to my sheet in case you wanted to scavenge for ideas:
One thing I could think of at a minimum would be a handy haversack, or just more plusses to some of the stuff I already have.