NEM.  The minimum needed to harvest is 10,000 and uses very little resources on your computer.  $10 right now buys 100,000.  I've known people who harvested between 25,000 to 100,000 since launch just running the wallet in the background.

I've harvested in the past, with little to no gains - but honestly, I would do it again...I just don't have a PC running 24/7.  I used a VPS when NEM first launched, which was an awesome learning experience; sadly I don't have the funds to run a VPS through google or AWS.  Any suggestions?

....And wasn't it called XEM? Mind filling me in on the changes?

Thanks in advance

Qora, great tech (automated transactions, decentralized blogging and social network, etc). it is totally undervalued.
But i suggest to do your own research. if you ask ten people you will certainly get 10 different answers.

$10 is very few. Better keep its in BTC,  Otherwise you must spend like $1 to send its to an exchange, Fees of trading of the new coins, etc.....
Finally you will get $9. If you are able of hold this for a long time only buy Doges to watch what happens but you don´t could wait nothing anyway.