I'm a completionist. I collect EVERYTHING. I also have weight mods so I can do this. And I also have LOTS of unspent $ (350k currently). It would be nice to have something to spend all this $ on!

All Master robes.

building a house...

really the only substantial money sink in this game...

building every home. buying every home. furnish the heck out of everything. buy all the materials you need to craft things. buy stuff to display in your homes.

I'm kind of a horder as well but with my next character I plan to break that by only letting her have one storage chest... no homes to own or property.

Training will svck it right up.

If you haven't leveled Enchanting, filled petty soul gems. lots and lots of filled petty soul gems.

Agreed. Getting training every chance you can is a great way to keep yourself chasing that next dollar.

Training, buy all houses, clear out alchemy shops or Kill something at the sea of ghosts and put the septims in it's body then let the body float away.

For a moment I thought you had 350,000 on your bank account and you want to know if you should buy the DLC or something.

Spend it all on training and that inflated real estate in Solitude.

Word of wisdom.

Start cleaning out shops. If you haven't build your Hearthfire houses yet, then it's smart to start buying up iron ingots and goat horns. And even if you're not a devoted alchemist, buy all alchemist inventory if you have the chance. Never know when you're gonna have a sudden interests in Alchemy (maybe for exploits and game-breaking purposes?), and when you would tear your hair out looking for Hawk Feathers.

For funsies, I like to buy all the gold and silver ingots and jewels, and then I try to fill my house's basemant.

I wish there was a lot more to do with money, but there's only so much they can do without turning it into an economy sim.