Looking for suggestions for young player.

So, my 5 year old nephew has taken an interest in Maplestory. When I watch him we have started playing with him on my laptop. I have found it a great tool in trying to teach him letter placement on a keyboard, this was great trying to explain to him the reason the keys were laid out the way they were, and encouraging to read. I was wondering if anyone else has a younger one they play with and any tips on activities that I may do with him. We are level 36 cannoners. As you can imagine he has the attention span of a 5 year old so grinding is not something that he enjoys. Thank you.