Workbench. Built using 4 wood blocks, required for the 3 x 3 crafting grid in non-creative mode

mods/creative/init.lua

@@ -72,6 +72,7 @@ trash:set_size("main", 1)
 creative_inventory.set_creative_formspec = function(player, start_i, pagenum)
 	pagenum = math.floor(pagenum)
 	local pagemax = math.floor((creative_inventory.creative_inventory_size-1) / (6*4) + 1)
+	craft_resize(player, _)
 	player:set_inventory_formspec("size[13,7.5]"..
 			--"image[6,0.6;1,2;player.png]"..
 			"list[current_player;main;5,3.5;8,4;]"..

mods/default/README.txt

@@ -90,6 +90,10 @@ Calinou (CC BY-SA):
 
 MirceaKitsune (WTFPL):
   character.x
+  default_workbench_bottom.png
+  default_workbench_top.png
+  default_workbench_side.png
+  default_workbench_front.png
 
 Jordach (CC BY-SA 3.0):
   character.png

mods/default/crafting.lua

@@ -298,6 +298,15 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = 'default:workbench',
+	recipe = {
+		{'group:wood', 'group:wood', ''},
+		{'group:wood', 'group:wood', ''},
+		{'', '', ''},
+	}
+})
+
 minetest.register_craft({
 	type = "shapeless",
 	output = "default:bronze_ingot",

mods/default/functions.lua

@@ -1,5 +1,51 @@
 -- mods/default/functions.lua
 
+--
+-- Crafting
+--
+
+function move_items(s_inv, s_listname, d_inv, d_listname)
+	local s_size = s_inv:get_size(s_listname)
+	for i = 1, s_size do
+		local stack = s_inv:get_stack(s_listname, i)
+		if stack and not stack:is_empty() then
+			d_inv:add_item(d_listname, stack)
+		end
+	end
+	s_inv:set_list(s_listname, {})
+end
+
+function craft_resize(player, size)
+	-- if no size is given, set to default
+	if not size then
+		if minetest.setting_getbool("creative_mode") or
+		minetest.setting_getbool("inventory_crafting_full") then
+			size = 3
+		else
+			size = 2
+		end
+	end
+
+	local inv = player:get_inventory()
+	if inv:get_width("craft") ~= size then
+		move_items(inv, "craft", inv, "main")
+		inv:set_width("craft", size)
+		inv:set_size("craft", size*size)
+		return size
+	end
+end
+
+-- set non-creative inventory
+minetest.register_on_joinplayer(function(player)
+	local size = craft_resize(player, _)
+	if size and size < 3 then
+		player:set_inventory_formspec("size[8,7.5]"
+			.."list[current_player;main;0,3.5;8,4;]"
+			.."list[current_player;craft;3,0.5;2,2;]"
+			.."list[current_player;craftpreview;6,1;1,1;]")
+	end
+end)
+
 --
 -- Sounds
 --

mods/default/nodes.lua

@@ -1061,6 +1061,42 @@ minetest.register_abm({
 	end,
 })
 
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	if formname == "default:workbench" then
+		if fields.quit then
+			craft_resize(player, _)
+		end
+	end
+end)
+
+function default.get_workbench_formspec(size)
+	size = math.min(6, math.max(1, size))
+	local formspec =
+		"size[8,"..(size+4.5).."]"
+		.."list[current_player;main;0,"..(size+0.5)..";8,4;]"
+		.."list[current_player;craft;0,0;"..size..","..size..";]"
+		.."list[current_player;craftpreview;6,"..(size/2-0.5)..";1,1;]"
+	return formspec
+end
+
+minetest.register_node("default:workbench", {
+	description = "WorkBench",
+	tiles = {"default_workbench_top.png", "default_workbench_bottom.png", "default_workbench_side.png",
+		"default_workbench_side.png", "default_workbench_side.png", "default_workbench_front.png"},
+	paramtype2 = "facedir",
+	groups = {choppy=2,oddly_breakable_by_hand=2},
+	legacy_facedir_simple = true,
+	sounds = default.node_sound_wood_defaults(),
+	on_construct = function(pos)
+		local meta = minetest.get_meta(pos)
+		meta:set_string("infotext", "Workbench")
+	end,
+	on_rightclick = function(pos, node, clicker)
+		craft_resize(clicker, 3)
+		minetest.show_formspec(clicker:get_player_name(), "default:workbench", default.get_workbench_formspec(3))
+	end,
+})
+
 minetest.register_node("default:cobble", {
 	description = "Cobblestone",
 	tiles = {"default_cobble.png"},