I always recommend
www.freshroses.com for very reputable, pretty flowers. You have to make them yourself, but if friends or family are willing to help the day before it's worth it for pretty, budget flowers. I've always been happy with them, and I know martha stewart wedding boards talk about them alot.
Don't ever ever ever buy the veil from a bridal store. Though you can find them at bridal stores, I ordered from a bigger selection online of partially prepped veils that you make yourself. All you have to do is pull a thread, and it gathers it at one end. Sew it to a comb and voila! It cost me $12. I just saw the exact same type of veil at David's Bridal for $80. Puhlease.
I always tell people about doing their weddings on a budget that the important thing is that less is more. It's not about doing it ALL on a budget, it's about doing it WELL on a budget. Too many people try to do everything with a small budget, so they end up with a bunch of cheap or scary looking products and bad vendors. I especially believe this about receptions. I believe you owe it to your guests to either feed them truly tasty food, or don't feed them at all and have the reception at an off dinner hour. People who love you and don't just consider your wedding an opportunity to party on your dime will understand if your budget only allows for a few hors d'oeuvres, a cake and punch. But what they won't understand is getting indigestion from dry broiled chicken w/ brown broccoli florets

I know I would rather my loved ones keep their money than waste it on chicken or salmon jerky. Everyone always remembers the food...whether it's good or bad. Better that they just remember a really really good cake.
You can buy a lot of candles for a good price at Ikea.
I bought my wedding shoes at DSW warehouse vs. a bridal salon or department store. I saved about $50.
Ask to borrow a petticoat..or a veil even. I can guarantee everyone knows at least one bride with one stored away. Also ask around to borrow jewelry. In fact, my best friend offered to let me use her beautiful wedding tiara but my head was too large LOL.
Another warning: unless you
really know the person (not even relatives and good friends are always reliable) or get lucky, you get what you pay for with a photographer. I'm not saying it's not possible to get a good deal, but I've read way more horror stories than success when people go with a photog "who's a steal"
How I saved money: I could not afford most minimums required for evening receptions. I also could not afford a bar or dancing (besides, DH's dad and extended family doesn't believe in drinking, so no loss). I got around people expecting a big party by having a lunch reception at Maggianos...which also had half the minimum of the evening receptions. We served champagne punch instead of having an open bar and had tons of amazing food. It's a good thing we didn't have dancing, everyone could barely walk out of there as it was. I also saved those hidden fees you get on rentals, etc, by having it at a restaurant.