I often find myself a bit parched, in the middle of a rainstorm, surrounds by metal pots and empty tin cans. It would be nice to be able to capture rainwater for drinking, cooking, etc...
5 rocks + 1 plastic bag + soup can + multitool = solar still + multitool (no that recipe does not exist yet, but it should) - this recipe assumes that the multitool is used both to cut the bag into a sheet, and that there is a spade blade on the multitool (or perhaps we need to find an entrenching tool as a new item). (Then: Multitool + E-Tool + Trapping + 6 branchs = Multitool + E-tool + Trapping + Pungi Trap (- like campfire, can't be carried around; used in scavenges in the location for catching larger game than squirrels).)
I have tried to see if there was a way to use the tin cans to get water but so far no luck. I've been thinks about this problem of finding water when it's raining. These are not in the game but could be.First off what happened to the good old down pipe off the roof of a house. Raining lots of water BUT change it to say "dirty water". You will need to boil the water because if you drink it strait you have about a 90% chance of getting sick.The next way could be a crafting system. Trapping + 5x plastic bags + 10 string + 6x sticks + multitool + saucepan = skin tarp rain trap. It would work like this. The skins make a big sheet that water will run over. You cut a hole in the center and tie the saucepan to the under side of the hole. You then use the sticks to make the sides higher than the center. You put in it the open (yes you can find them in a forest) as the rain comes down some will land on this and the water will run in to the saucepan. A way I was show to get water in the bush was to take a plastic bag shove as many leaves on a tree or bush in the bag and tie it off. You then let the sun sweat the water out of the plant. This is a real survival skill. It may not be as good in the USA but it work well in Australia. So down sides to this could be need botany skill so you know NOT to put the bag over poisonses. The last way I can think of may be the simplest (and restating your point). You just sit as many saucepans in the open and hope some of the rain goes in. This way all that is need is in the game and I think it should not be too hard (I may be wrong as I do not know how to code) to add this to the scavenge list. Well I hope this helps
The problem with roof water is not that it's contaminated with bacteria (which boiling solves) but that it's dirty, and boiling doesn't solve that. Filtering, along with boiling, solves both problems as does distillation. The easiest and most accessible method of distillation in a post-apocalyptic setting is the solar still method: http://www.youtube.com/watch?v=Ik-zfs9fD-g
I'm not sure if I would like to drink dirty rainwater where I live now, let alone if I live after the Apocalypse! :D