Pick a maker, make some boys. Make yourself, your friends, your husbands, whatever.
Usually these threads are dedicated to one kind of maker, but maybe it would be fun to mix them up. Don't forget to rate other boys.

>Rinmaru (SFW)
Lots of options, easy to use
http://www.rinmarugames.com/playgame.php?game_link=mega-anime-avatar-creator

>Bebinator (SFW)
Fewer options, but a very distinct style
https://bebinator.com/

>K-Kisekae 2 (NSFW)
Tons of options, high learning curve. Geared toward making girls, but you can make femmy looking boys with a little tweaking.
http://pochi.x.fc2.com/kisekae/k_kisekae2.html

>Shonen Maker (Very NSWF)
Shotas only. Detailed, but lots of lewd options. Use your discretion.
http://rinrin.saiin.net/~shonenmaker/shonenmaker/index_app.html

Other makers are more than welcome, these are just some popular ones I've seen used on /cm/ before.