I've been trying for a while but I can't get it right because I don't have the skills, so I was looking forward to this demo so I could check it out and create my own inventory.
Create game UI or custom menus using pictures and drag-n-drop · By
The menus in the video are menus I created for my game exclusively so I'm afraid I cannot share, but none of those were inventory but rather skill tree and ability menu, it's not like the classic Scene Item. You gotta remember this is all pictures. You can build menus like I did just by learning the demo. While the example in the demo is basic, the good news is creating custom menu using Show Pictures only require just that many commands.
Oh no, what's shown in the video was indeed created with Pictures UI Creator. My point is the plugin create menu using Show Pictures command, so you can imagine what kind of menu the plugin is capable of creating. If what you want to create is default, classic RPG Maker Scene_xxx then you'd need to wait for future update of the plugin because menu created using Pictures are different from menu like Scene Item.
To summarize this, the better your skill are at eventing, the more kind of menu you'll be able to create with this plugin, but if you're new at RPG Maker or rarely use eventing, then you won't be able to create fancy stuff but rather simpler things.
If you're a beginner, you can use this plugin to create simpler things. Creating an inventory scene using only Show Pictures requires some skill, I'm not gonna lie. The good thing about this plugin is its versatility, you can use it to do a lot of other things that fit your current skill. You can use it to create tutorial scenes, for example. Anything that use Show Pictures command. If you need any help, don't hesitate to message me via Discord.