Thats pretty cool.
May I suggest that you start with
www.thecommon.org
I am a member through my church and it is local people with needs posting their need and then you can choose to help.
The type of help varies, it could be food, clothes, furniture, a ride to the Dr., I fixed a old ladies lawn mower.
The best part about it is is local, so you are helping people in your city, and its all free.
It is best if you hook up with a church if you really want to help, my church
www.marshill.org, works with relief groups in Africa, Haiti and Costa Rica.
We do lots of mission trips to help stop hunger, help set up water filters to provide clean drinking water and build shelters.
For a year we borrowed church members RV's and sent people to Louisiana after hurricane Katrina, they went in 3wk rotations.
We found a company right here in Grand Rapids to design, build and ship water filters that are being used all over the world.
They cost $90 ea shipped and last 10 years and provide enough clean water for a village.
www.20litres.org
Its just a plastic barrel filled with sand and a spigot on it.
We also have the "White Bucket Project" that was started by our church, it is donations from church members that is given to local people in need, gas cards and cash.
You see a white bucket in the hallway, have extra money, drop it in the bucket.
http://marshill.org/the-white-bucket-project/
On the first day of the White Bucket Project there was a ladies Rolex watch and almost $30,000 donated.
That was a very moving day.
My point is, think global, act local.
Your heart is in the right place.
Here in the US we have the Red Cross, The Salvation Army, Goodwill, and churches.
If you really want to make a difference without loosing your job hook up with one of them.
Something else we do at my church is small groups, that is a group of 6-8 people who get together once a week outside of church to do whatever they want.
My first wife and I belonged to one, we did bible study, discussed the Sunday teaching, helped one another, had boys night, girls night, babysat each others kids and volunteered.
So maybe you start a small group and do volunteer work, a WWII Vet might love a ride in your Rover on his way to the VA hospital.
Just food for thought.