In this day and age Investing 10 dollars might be two little for most legit investments due to minimum Cap. That being said, go to Ebay and look for no min Bid auctions, look for ones where max bid placed is under 10 dollars, wait till the last 5 minutes of end of auction and place your bid. The item in place must have more value than the 10 dollars, aim for a 4X multiple such that if its worth 40 dollars, you can resell the same giving a 10% discount. Repeat the above till the 10 dollars becomes 1,000, then use the money to buy some penny stocks

Go to the Casino and invest it on red.

buy $ 10 worth of Lemonade and sell for .25 a cup . Your $ 10 will net you $ 20 , a 100% profit in less than 1 hour at the proper location .

Sadly, you have so little seed $$$ that I really can't tell how to invest it. Maybe look into some up and coming penny stock and put it there, but it's always buyer beware on INEXPENSIVE/CHEAP investment vehicles. . An inexpensive "collectible" that perhaps given enough time may/might appreciate in value.

buy $10 worth of home made looking cookies and resell them for $.75 each

8 mcdoubles