We also had a very small wedding budget. We did:
DIY invitations, orders of service etc
MIL's friend did the flowers.
Friend's talented sister did the photos.
Rented a room in a local conference centre for the reception; told them it was for a party and didn't specify that it was a wedding party.
Local butcher did a hog roast, and we put together a buffet of "fancy" salads, then friends' mums did a buffet of puddings. Hired local teenagers to help with setting up the meal, topping up drinks, clearing up etc.
All the women did their own hair and makeup.
Bridesmaids wore dresses they already had.
DH, best man etc got suits from M&S substantially marked down in the January sales (probably a bit late for that now).
Second-hand dress (I did have to buy and return a couple from ebay before I found one that fit really well so it depends how much you're willing to deal with that slight hassle).
Used our own car.
Agree with PP that people are usually more than happy to help. We did give the girls who'd done the flowers and photos monetary thank you gifts, and paid the teenagers who helped at the meal of course, but it was a fraction of what you'd pay for professionals.
I've also been to a winter wedding where the dinner was jacket potatoes with "fancy" fillings and salads - I know it's not very traditional but it was just what people wanted on a cold winter evening. Another friend had her mum's (or grandmother's or something) wedding dress altered by a seamstress into something a bit more modern.
Remember that people are there to celebrate with you, not to be waited on hand and foot whilst secretly judging. Or, most people, anyway. Haters gonna hate!