Yes.  Those are considered as out-of-pocket costs for charitable services.

I have the same expenses this year ... we may be in a similar situation.  I miss the car-groups though.   🙂

Yes.  Keep receipts for all tangible items you provide to the ministry. 

You can also deduct mileage at 14 cents per mile driven for your ministry work. 

What Church Donations are Deductible