Quote Originally Posted by gburch
My slave loves shopping, but has limited finances available in her current situation, so I have come up with an idea, which she loves. She may ask me to purchase an item for her (I have the choice whether to accept or refuse), and she will use her body in various ways to pay me back, according to the value of certain activities on the price list which she has begun writing. This has the advantage of giving me more opportunities to call her my dirty little hoare, which she loves hearing!

We have a few activities listed already, and covered all the basics, but I'm looking for ideas to further expand it. I'd like the kinky minds on here to offer suggestions for punishments (from gentle to harsh) to add to the list.
Ok, as others noticed, it's rather submissive than slave, and this sound like prostitution (whether you're married together or not, and it's legal or not in your zone is, IMO, mainly your problem).
Let's assume it's legal (due to marriage or whatever).

You are thinking punishment, so far so fine, I would recommend a parsing and quoting of the BDSM checklist.
The pervert I am might just suggest a system of price-reduction with time and usage.
It could be:
- unused line for more than xx time period get a 10% cumulative discount.
- each time a line is used, it get a 5% cumulative discount.

(That way, the big money items better done right now than later, and there is other benefits I let you discover...)
You might or not open a credit line for the submissive. (do you pay only the price for the 'toy' or can she keep some extra for the next time ?)

Caveat: beware, your submissive might be topping from the bottom if she choose the item from the list. She should only provide you with the required amount, and you should surprise her with some combination for that sum.

Apart from punishment, you could also considere transformations for decreasing annuities.

Let's assume a standard wife (if such ... exists), transformations could include:
- no more pants, ever (done by destroying/giving/trashing existing ones)
- body hair removal (regular inspection required)
- pubic hair trimming/removal (up your taste)
- head hair dying or bleaching (you choose the color)
- head shaving or getting long hair (your choice)
- mandatory lipstick (as soon as wake up... color by you!)
- mandatory eye makeup (ditto)
- nail (colored, length: true or using manucure, by increment)
- no more underwear (as for pants...)
- wearing specific jewellery (neck, finger, wrist, hankle, nipple, waist) without piercing
- getting pierced permanently (nipple, sex, but also a collection of classical rings long each ear)
- wearing high heel
High heel shoes should be done by 1/2 inch increments, assuming she start with flat shoes allowed, each step is done by suppressing all the shoes that have a smaller heel height. The limit 4 inches heel should give you a 8 steps path. May be you want a quicker one ?
- wearing stocking (mandatory or forbidden)
- skirt length (by increment, or rather decrement ?)
- wearing nipple extender
- choose of wardrobe for the season...

I called them transformation, because they are nearly all definitive change (your money back if cancelled ? I would say, at least the initial price must be repaid). And to be fair, they should give her a decreasing annuity (decreasing, because that's were the motivation for more is). For once, the initial price of transformation might not change with time (but the longer she is wearing high heel, the less money she get until she take another transformation.)

Hope this give you more ideas.