I know mining is not profitable with that small hash power , just curious about it
You could probably go on eBay and find an older scrypt miner, although I'm not exactly sure which one would have a hashrate at 5-10Mh/s. If you don't mind going (a lot) lower, the old gridseed ASICs might do the job, if it's just for testing purposes.
Alternatively, there are Futurebit's USB scrypt ASICs (estimated 3-5Mh/s) that are rolling out, although you'd have to wait longer than if you bought an older one from eBay. https://bitcointalksearch.org/topic/ann-futurebit-moonlander-2-the-most-powerful-and-efficient-usb-stick-miner-2125643