Do a home improvement that will increase the equity in your home more than the cost of doing the improvement. As an example, I have heard rumors that adding a deck to a home, because of the amount it increases the homes resale value, can add up to 4 times the cost of actually installing the deck.
Everybody should know that under current tax law you can sell your primary residence and any capital gain up to $250,000 ($500,000 if married) is tax free. Wow... is that powerful!... and why aren't more investors taking advantage if that "loop hole"?