So you’ve found the geocache. What’s inside it?

In decreasing importance…

Logbook	The logbook is the sheet of paper that you sign to show you’ve been there. People either sign it, stamp it with a custom made stamp, or use custom-made stickers. Please sign it. Those stamps take up a lot of space. Those stickers add to the paper’s thickness and make it difficult (and sometimes impossible) to get back into the log holder
Trackables	These have a trackable tag attached to them. The idea is that you take it with you, tell geocaching dot com that you’ve got it, and log it into each subsequent cache that you visit, and after a few weeks you leave it in a cache for someone else to pick up. You can follow their progress (on geocaching dot com) round the world right up to the point where someone who doesn’t understand the game takes it home to keep.
Ink Pad and Stamper	Letterbox Hybrid caches have an inkpad and stamper. That’s what distinguishes a letterbox hybrid cache from any other type. These are ideal for staining your fingers in brightly coloured ink.
Swappables	These are all sorts of cheap plastic tat that people who don’t like children very much leave in caches for children to find and argue about. In theory you are supposed to only take a swappable if you leave something of equivalent value. In practice if the swappable was worth anything at all it wouldn’t be left in a cache for months on end, would it?

Oh – please DON’T leave sweets or sugar sachets or any food in caches. It just goes manky and attracts ants.