For a garden or country wedding, milk bottle arrangements can be very sweet. You can buy small, new milk bottles in craft stores very inexpensively, and vintage bottles of all sizes can be collected at yard sales, thrift stores or from online sources such as ebay. These clear glass containers suit garden flowers perfectly.
Small milk bottles are well suited for the center of long tables, using three or four per table. If your tables are going to be round you could also use four or more small bottles per table, or a combination of a large milk bottle, two smaller containers, and assorted candles.