Thanks to the guys from gta-junkies.com for supplying these maps. These will help you track down the 250 hidden items around the game world. The tagging spots, horseshoes, snapshots, and oysters are all required for 100% game completion; unique jumps are not, but are rather fun to track down nonetheless.
There are 100 tagging spots in San Fierro, hidden all over the place. When you get all hundred of them, a TEC-9, AK-47, Molotov Cocktails, and a Sawn-Off Shotgun will appear at your house in Ganton.
Horseshoes are found exclusively in Las Venturas. When you find all of them, you'll obtain an M4, MP5, Combat Shotgun, and Satchel Charges at the Four Dragons Casino, and CJ's Luck stat will get a signficant boost.
Snapshots can only be found in San Fierro, but the tricky thing here is that you can't even see them! You'll need to have a camera in your inventory to find these guys; when you're at a snapshot location, whip out your camera and scan around through its lens until you locate a small, rotating camera icon. Take a picture of it to gain the bonuses.
When you get all 50 snapshots, a Sniper Rifle, MicroSMG, Shotgun, and Grenades will all appear for pickup at the garage there.
Oysters are found throughout the game world, but are always located underwater. When you find all 50, CJ's lung capacity and Sex Appeal stat will be boosted. In other words, don't bother tracking these down unless you're gunning for 100% completion.
Unique Jumps aren't required to get 100% completion. In order to get a Unique Jump credit, head to the marks on the map and look for a ramp; when you hit the correct ramp, all you need to do is hit it at an appreciable amount of speed. If it's the Unique Jump ramp, you'll go into a slo-mo cinematic view, but you won't get credit unless you go a certain distance. If you don't get the Unique Jump notification, try the ramp again with a faster car or motorcycle.
Use this map when you need to find a suit of armor, a weapon pickup, or a police bribe!