We did this on another board, and it was great to see the ingenuity. We have one million dollars to spend. There are a few simple rules:
1.0 You must specify an item to purchase, and provide the URL or pic of the item and price. The item should have an X Marks flavour (kilt or Scottish/Gaelic/Celtic... whatever!) if possible.
2.0 You can spend up to half the balance at any time. When you post, subtract the cost of the item and post the balance for the next person. You should spend as close to half as you can!
3.0 Lets use U.S. currency... it seems to be pretty common these days!

For example: The first person finds a house in Glasgow for $500,000.00. They post the picture or URL, tell the price, and write the remaining balance in their post. The next person has up to $250,000.00 to spend.

Have fun!

I'll get things started...