Contributions

Sidorovich has a charity contributions system, some kind of lottery. You can participate if you have 2 million RU in your inventory. Select a lot (which will cost you money), and he gives you a tip on a stash in the Rookie Village. It can contain something valuable or nothing of interest.
This quest is unmarked.
== Walkthrough ==
After completing the Shadow of Chernobyl storyline and obtaining 2000000RU, speak to Sidorovich, selecting "Sidor, I'm sad...". You can now make contributions in another dialogue. The necessary prerequisite for each contribution is to have 2000000RU.
Each contribution will spawn a stash with a random weapon and a bunch quest items that you'll need to give back to Sidorovich to end the quest.
One of the contributions (Greenpeace) spawns a talking controller named Stalker Petrov in the Rookie Village. Talk to him to receive the Gunslinger's AKMS.
One of the contributions (lottery) is a "race": the stash is not hidden but is simply put on the ground near the stalkers in the village. Whoever finds it first, wins. There's a catch, though: the stash only spawns when you exit Sidorovich's bunker then talk to Sid again. Then you can either find the stash yourself (walk while holding F to highlight it) or watch the stalkers; somebody will start crawling to get it first.
Stash locations are randomly selected from 26 potential spawns in the Rookie Village.
Random weapons in the stashes are selected from the following list. Note that they never repeat, i.e. you are guaranteed to get all weapons from this list after the completion of this quest.
* Benelli M3 "Tactical"
* Huron's AKMS
* FN FAL 50.00
* "KORD" Tank Machinegun
* Vepr-12
* SVD "Eagle-Owl"
* RPK-16
* TKPD "Sniper" Carbine
* Needlegun
* M110 SASS
* Fight Gloves
* McMillan CS5 "7.92x57"
* Baseball Bat
* Arctic Warfare "Super Magnum"
* HK 417 "Assault"
This is the list of donations:
Contribution 	Entry cost	Notes	 	 		 	 	 	 	 	 	 	 	 	 	 		 	 		 	 		 	 		 	 	 	 	 	 	 	 	 	 	 	 	 	 		 	 	 	 	 	
Funerals for deceased stalkers	200,000 	 	Widows of the deceased stalkers	300,000		Treatment of the alcoholic stalkers	400,000	Reward: Vodka ×100	Ordering whores for the entire Zone	650,000	Quest items multiply if:- Greenpeace donation has been made- certain dialogue choices have been made	Donating to the army	350,000	involves carrying 180kg worth of exos	Young stalkers training	200,000		Cemetery reservation	300,000		Elite cottage in Kyiv	800,000		Mansion in Hawaii	500,000		Darwin Awards	250,000	you get 300000RU back	Greenpeace	450,000	Stalker Petrov spawns in Rookie Village;This contribution doesn't have a stash	"Sprint" Blitz Lottery	150,000	Race, see above for the rules	Population restoration	300,000	you get 190000RU back	Zombie civil rights	250,000		Rock concert in the Bar	400,000	Reward:BalalaikaGuitarHarmonicaand you get 200000RU back if you decide to perform!	Hire an instructor for Kruglov	50,000	
== Notes ==
* This joke quest doesn't lead to anything, and is completely optional. However, the Sponsor achievement you get for it is required for S.T.A.L.K.E.R, which is the main achievement of the game. If you don't need any of the guns found in this quest but aim for the achievement, it's better to be done at the end of the game, or when you have plenty of money to spend.
* All guns besides the Gunslinger's AKMS come fully loaded.
== Bugs ==