326- Cane
330- CJ's Phone
331- Brass Knuckles
333- Golf Club
334- Police Trungeon/Night Stick (Depending on where you're from)
335- Combat Knife
336- Baseball Bat
337- Shovel
338- Pool Cue
339- Katana
341- Chainsaw
342- Frag Grenade
343- Tear Gas Grenade
344- Molotov Coctail
346- Colt 45 Pistol
347- Colt 45 Pistol (W/Silencer)
348- Desert Eagle
349- Regular Shotgun?
350- Sawn-Off Shotgun
351- SPAZ-12 Shotgun
352- Mac-10 (Or Micro-UZI)
353- MP5
354- Hydra Flare
355- AK47 Assault Rifle
356- M4 Assalut Rifle
357- Country Rifle?
358- Sniper Rifle
359- Rocket Launcher
360- Heat Seeking Rocket Launcher
361- Flamethrower
362- Minigun
363- Satchel Charges
364- Detonator <---- Seemingly Useless.
365- Spray Paint Can
366- Fire Extinguisher
367- Camera
368- Night Vision Goggles
369- Infra-Red Goggles
370- Jetpack
371- Parachute
372- Tec-9
373- Armour model used in Ammunation (No Effect)
1240- heart (health pickup)
1241- power pill
1242- armor
1239- info icon
1247- bribe
1248- gtaIII sign
1272- blue house icon
1273- green house icon
1274- money icon ($)
1275- blue t-shirt icon
1277- save disk icon
1313- 2 skulls icon
1314- 2 players icon

And types:

0    Item does not display
1    Not pickupable and no respawn.
2    Pickupable and respawns after a few minutes
3    Pickupable, no respawn
4    Disappears shortly after creation (used for drops?)
5    Disappears shortly after creation (used for drops?)
8    pickupable (no effect)- disappears shortly after creation (used for ?)
11    Blows Up few seconds of creation*
12    Blows Up few seconds of creation (car explosion? timer is the burning flame?)
13    Slowly descends in Z and eventually goes through the floor (parachute?)X
15    Pickupable, no respawn
19    Pickupable with no effect (Information icon?)
22    Pickupable, no respawn