Anyone with a budget under $4,000?

My fiancee and I are on a very tight budget, only $2,000(we are paying for it entirely by ourselves). We are doing EVERYTHING we can think of to cut costs. My uncle is a photographer, my grandmother is making invitations, we're not having a DJ, we're getting the church and reception hall both for less than $200, we're having someone grill hamburgers and such for the food, but I'm having a heck of a time figuring out how do decorate on the cheap, as well as finding gifts for our wedding party. Does anyone have any ideas for decorations that could be used both at the church and at the reception? Or an idea for a cheap/nice gift for our wedding prty? (we have 10 people, I know we could save money if we didnt have so many, but FH insisted) And what about favors for the guests..we were looking at those personalized mms and those looked good. any ideas ladies?