KSit

With this mod, you can sit on various surfaces in Minecraft! Now you can comfortably settle on stairs, slabs, carpets, and even beds. To do this, simply get close enough to the desired block and right-click on its top or side surface.

Interestingly, beds work on a slightly different principle - you need to stand far enough away from them. In the mod's settings, you can disable the ability to sit on any block types according to your preference.

An additional feature is the special kiwi:sittable tag, which allows you to designate absolutely any block in the game as a seat. At the same time, the seat height is determined automatically!