Adventure Improved

Adventure Improved is a small-ish modpack for java 1.21.1 (and older versions with 1.20.1).

It includes mods such as Create, Ars-nouveau and more for multiple play styles, along with exploration base mods for impressive terrain. There are some default shaders but you can easily add your own when you have installed the pack. It can be played on both a server or on a client for different people and has e4mc for world sharing.