Originally Posted by PytnPlace
You can buy big bunches of flowers at Trader Joes/Costco/Sam's and make your own centerpieces. Buy vases at a glasswarehouse and fill the base of the vase (mason jars will work/but I think Mason jars are better for an outdoor/summer wedding) colored glass pebbles to match your color scheme. You can get the glass pebbles at a craft store. You can also scatter some of these pebbles on the tables.
I was about to say the exact same
Not sure what stores you have, here , we have Hobby Lobby and Michael's MJ Designs. You can' buy the colored sea rocks, glass whatever, for just a few dollars and they are pretty. The flowers are all sizes, breeds and colors. They have pretty cheap vases too.
Another thing you could do is small bowls with the glass in the bottom and floaters candles? There are endless things you can do cheap. You can even get ideas from the craft stores. Just find the right dept and tell them what you are doing, most will be over joyed to help you think of something.
You will have to take pics and show us what you did too