If you grew up playing NES games back in the 80′s, then you know that you had to blow on the NES cartridges to get it to recognize a game. Ahh memories. The one console that strengthened our lungs and our fingers.

Well, one modder is using that nostalgia to turn a profit with a clever mod. Seller nes_harmonica has turned some old NES cartridges into actual working harmonicas and put them on eBay. Right now you can get Dick Tracy, Legend of Zelda and Super Mario 3 with starting bids of just $7.

We all love the old NES cartridges. They bring back memories of hours of fun playing the old console. So we love any excuse to have them back in our lives today. Like with these NES cartridge hard drives.

Etsy seller 8-Bit Memory takes old NES cartridges, stuffs a hard drive inside and just like that Mario is holding your data. It will cost you $120 for 250GB, but he will gladly make any size for you and with any cartridge. For an extra fee of course.

The Famicom Box is a rare piece of Nintendo history. It’s an old school Nintendo system with 15 games built in. Sort of like Nintendo’s Greatest Hits. The games include Duck Hunt, Mega Man and Super Mario Brothers. It comes with two controllers and a light gun. Believe it or not it was designed for hotels and arcades.

It’s a rare nerd artifact, highly sought after and it’s available now on Yahoo Auctions at a starting price of $110. How high it will go is anyone’s guess. So, if you want an expensive NES alternative, the Famicombox may be for you. Your friends will be envious should you win.