Btw, if you say something like add a new deck to your house, or a new roof, or something like that, you simply won't have access to your house for a decade, sorry! Essentially, anything your money touches, you won't have access to it for ten years, and no one else will either until the ten years are up.
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I'd invest in alternative energies like natural gas.
Tech stocks are my strength but those need to be watched very closely and can meet a relative peak and fall back down to Earth in a 3 year window. If you said 5 years, I'd look into under performing tech stocks that have strong leadership, an established niche, and are willing players in the current and future technology arena.
But since it's 10 years that all means nothing. It's a shot in the dark. Bonds and treasuries have such pathetic interest rates its sure to be a loss after 10 years.