Jungle jarvan is so much fun to jungle as a tank.
Jungle maokai is fun and easy to jungle as long as your team defends blue. No blue buff, no ability spam, no passive, you die.
Just make sure you start e and place three boxes down, then get q next and you will clear wolves pretty fast. Then w for ganks, then max e, then w, then q. (ult inbetween ofc).
I usually go for boots of mobility so you can bolt out of the bush really fast and get a gank with the stun. But mercs work too, just a bit slower.
Make sure that you get a chalice if you want to give blue to your mid though, mao's ult needs a chalice or blue buff.
Get dragon with your ult.
Ult + smite = easy secure. And you only need one person to aid you to get it because of the 20% damage reduction.
Build him tanky and your cc on ganks is just awesome.
I hope you stun, walk forward then q them back towards your teammates!
Try him out, I reckon he's best as a jungle or solo top.