This is a modern list of 100 different things that could be found by players using a metal detector. These could be simply scene dressing discovered whilst players are looking for something more specific, or they could be used as possible plot points.
Many of the items found may be junk, some may be valuable and some have the potential to be dangerous. Even the junk may prove useful to inventive players.
Here is a sample result:
77. Ring Pull (From the old style pull tabs that were completely removed to just the ring from the more modern stay on tabs)