Going to have LOTS of $$ for 10 days- what to do with it????

[Account Closed]

I'm in-between houses, and for a period of 10 days, I'm going to have over 1.3 million in my bank account. A friend of mine suggested that I open a high interest savings account (2%) for 10 days and I'll accrue ~$700 in the 10 days. I thought this was a neat way to make some money doing nothing.

Anyone else have creative thoughts to make the most out of the highly liquid situation in a very short time? By the way, these ideas have to be 100% solid, I cannot risk losing any of it!

Can't wait to hear the ideas!