As of 2012-09-02, this mod is included with the standard minetest_game archive.
License: N/A
Download: N/A
Crafting:

Five glass blocks in a "U" shape makes 10 glass bottles.

Five steel ingots in the same pattern yields five heavy duty steel bottles.

Seven glass blocks in a slightly different "U" shape gives 14 drinking glasses.
Reduce, reuse, recycle:

All items are recyclable. Drinking glasses or glass bottles can be placed into the crafting grid in pairs (in any positions) to turn them into "glass fragments". One such fragments item for every pair of the bottles or glasses.
Then drop one or more of these fragments into a furnace to smelt them into normal glass blocks (1:1 ratio).
Similarly, steel bottles can be directly smelted back into steel ingots (1:1 ratio).
