One tool, the Blueprint Wand, drives everything - capturing regions, saving them as schematics, and placing them back through a single always-on-screen editor. Build once, stamp it everywhere.
Right-click a block with the Wand to set corner 1, then right-click another to set corner 2 - that's your selection. Crouch + right-click (Shift by default) once both corners are set saves it as a .schem (Sponge v2) or .litematic (Litematica v6) file, ready to reuse forever.
Right-click in open air to open it - a real screen anchored in the top-left corner, but it never pauses the game, so you can keep walking and looking around while it's up. From top to bottom:
Every one of these is a button on the screen itself now - there are no placement keybinds to memorize.
On a claimed Construction Site, a non-admin who isn't cleared to build there sees a trimmed-down screen instead - just 4 icons and 2 tabs, with Undo, Redo, Cut, Copy, Paste, Fill, and Restore all hidden until they're actually allowed to touch the site.
Pick a saved schematic from a searchable list, hit Generate to drop a translucent ghost preview into the world, then nudge and rotate it using the header controls above before hitting Place to finalize it.
Fill your selection with a geometric shape instead of a saved schematic - Box, Sphere, Cylinder, Disc, or Pyramid, cycled with the tab's own arrow buttons - as Filled, Hollow, or Walls, using whatever block you choose. Perfect for domes, pillars, and towers without hand-placing a single block.
The simple version: fills the whole selection with one block. Five modes are available here - Replace, Keep (air only), Hollow, Outline, and Destroy (drops items instead of just vanishing) - more options than a straight fill-and-forget.
Puts the selection back exactly the way the world's own seed generated it, either a Full Restore or Surface Only - undo your own mess without touching a single vanilla /fill command.
Every placement or fill can be undone and redone from the icon row, up to 10 steps deep in either direction - starting a fresh action always clears whatever was waiting in redo, exactly like a normal editor history.