Games which use the "find items and do something important using those items" premise:
Kings Quest (I-VIII, so 8 different games, annoying but good)
Hugo's House of Horrors (good one, a little creepy, but funny and complex)
Peasant's Quest I-III (text based, except for the third one, very funny)
The Cave (the first ever use-items-to-do-stuff game, text based)
Nearly every game on this site:
http://www.escapetheroomgames.net/
It's kind of a genre now, under the umbrella genre of Puzzle games, like Shooters are under the umbrella genre of Action games.
By the way, did you change the code to a string in the new version? It just occurred to me that the glitch I experienced may have been exclusive to me and a few others, like the event interruption glitch I had when trying Dameria's Collision Detection world, but it'd still be nice if you changed it so that everyone could play your game.