Truffle season just ended (early September) and although this year's season was shorter than most, there are are still plenty of truffles around. You can easily get summer truffles online, and they aren't terribly expensive. Or just get some truffle oil, (but be careful with it).
What should you do with it? Maybe some truffled eggs and toast. Or truffled risotto. Or shaved truffles over butternut squash gnocci with browned butter.