Get a new hobby. Invest wisely. Take a vacation. Get more ideas. Give money to starving writers. Hey... I could use a grant... Write a novel. I did that and it's fried my brain. I fully recommend it for anyone with too much time on their hands.
Backpacking (as in staying in hostels and pensions and city hopping from place to place backpacking) is always nice. I am patiently waiting for the day I can go back to that. Just waiting for the kids to be old enough to carry their own back packs and then it's back off to see the world the way it was suppose to be seen, one advernture at a time.
it's very simple...send me all but the basic money you need to eat and I'll send you 80% of it back in random amounts at random times...that ought to make life a tad more tense and exciting...the pounds will melt away and you'll sleep a lot less :)