Yeah an investment is something you put money in with hopes to gain a greater return at a later time.
My best investments, Costco stock. But sadly I bought it on the stock market simulator, not real life. So I made a ton of fake money...
Best buy, (which is what your thread is geared at I think) probably my old iPod classic 120 gig. I still have like 80 gigs of space left on it, and it never runs out of battery. Love the thing. I use it every single day.