Place On Slabs is a Vintage Story mod by BeloMaximka. Place On Slabs lets you put selected non-solid blocks, such as chests, bowls, torches and flowers, on horizontal slabs.

Why this mod is worth installing
This QoL mod is useful for builders who want to decorate narrow slab surfaces or create compact functional spaces. It is also helpful when vanilla placement rules prevent otherwise natural arrangements.
What Place On Slabs adds
Place On Slabs changes placement behavior for horizontal slabs. It allows selected non-solid objects—including chests, bowls, torches, anvils and flowers—to sit directly on their upper surface instead of requiring a full block.
The mod is focused on convenience and building flexibility rather than adding new items. Its offset-based approach modifies how the game handles placement, so unusual interactions with other mods may occur.
A server-side blacklist can exclude specific blocks from the altered behavior. Changes to that list require reloading the world before they take effect.
Where to download Place On Slabs
The official Vintage Story Mod DB page is the right place to get the current release through the in-game mod manager.