I've been watching building tutorials, and what I find bizarre about them is that blocks are widely used in other way than they are intended. E.g. pressure plate on a fence makes a table, but it's still a plate: it sounds like one and shrinks when you go closer. Thanks to mods, actual tables and other furniture are not a problem, but one block I still haven't found proper substituon for. Trapdoors.
I often need to cover things when I build, but allocating the entire cube space for it is a waste to me. So the question is: Are there any mods that focus just on thin covers? The best example I can think of is Map Frames from Bibliocraft or Online Picture Frames, however the former come with too much stuff I don't need, while the latter have easy-to-access GUI.
To cut it short, the covers must:
be the only blocks in the mod
not base on Multipart plugins
have a thin collision box, so entities can occupy the same block
stick to any side of the block
remain when the block they stick to is removed
not have any interactions/GUIs (at least not with empty hand/common blocks)