I've purchased RPG Maker MV on Steam Store, with the intention of finally being able to use the legal form application, and so eventually make commercial games. But, the first thing i've noticied, when I opened the Maker, it is that the "Icon Set" basis is very limited and with few options. I've searched in this forum for a proper iconset, but most were the basis of the RPG Maker VX Ace resized, and I do not have a license from the RPG Maker VX Ace.
I've been looking for artists who make icons for free use, commercial or otherwise, and with the help of a post in this forum (I do not remember well what it was one that had several artists and icons creators), I found "7soul1 ( Henry Lazarini) "in DevianArt ... and I loved your icons. But when I import them into the RPG Maker, they were in a different size, needed to be resized properly. And that's what I did. I picked up one by one and resized, arranged so that they are close affinity (weapon with weapon, magic with magic, etc.), and made a "IconSet" modified base, I can use in any game. And now I'm sharing with you, for those who want to use. In their own terms of use 7soul1 he says that all the icons used by me to build this base, are free to use (either commercial or not). So if you want to use the icons, please credit: http://7soul1.deviantart.com/; Henry Lazarini.
One more thing, I also put the RPG Maker MV default icons with the kit, so if you want to use this iconset, you also need to have a license from the RPG Maker MV.
I hope you liked, whenever I do things for my game, I'll be sharing here.
I apologize for any English error because this is not my native language (I'm from Brazil), and used the google translate most of the text.