We love oil + vinegar around here. Especially balsamic vinegar on with fresh tomatos and mozzarella. Yum! You can make your own customized bottles in no time. 
You'll need some glass bottles (ours were soda bottles - but you can use just about any similar bottle), spray paint, tape and oil stoppers.
Tape it up and spray it down! I went with the striped look so I could see the oil and vinegar in the bottle and be able to tell when we needed to refill them.
We love how they turned out. I think they would make awesome wedding or house warming gifts too!