Item-Collectors
A Factorio mod: http://www.factorioforums.com/forum/viewtopic.php?f=14&t=5410
A Factorio mod: http://www.factorioforums.com/forum/viewtopic.php?f=14&t=5410
Lua
A Factorio mod: http://www.factorioforums.com/forum/viewtopic.php?f=14&t=5410