I am working on a campaign which will be low level and relatively low-magic. Since it's basically a tribal society there won't be much stuff to buy. Once you got your masterwork weapons and armor and stocked up on potions, there are not a lot of options to spend any coin on. (Other magic items would be treasures, but not for sale.)
So alternatively, completing quests could be rewarded with Influence and Labor, and loot from defeated enemies could include Goods and Magic. Building yourself a fancy home would certainly be a way to start spending your capital, but I am wondering if there is more you could do with it. As you perform deeds that help the locals and complete assignments for the lord, you gain both prestige and some measure of power through popular support.
Now the question is how to use the capital resources that you accumulate? You could use Goods and Labor to improve the defenses of the town, which in turn nets you more Influence (say at an exchange rate of 2:1 instead of the regular 3:1). Now you can use the optional rule on page 81 of UCam and spend Influence points on Diplomacy and Intimidate checks, but there must be more that you could be doing with it.
Any ideas?