Pretty much everything for the wedding that involved a font was made single-handed by my sister Charlotte. She designed the save-the-dates, the invitations (which I've just realised I have never blogged and don't have a photo of. Must try to snap one at some point).
She designed them all in a simple graphics program she has (I'll ask her what it was an update) using some free downloaded fonts, and we printed them on recycled white card.
The guestbook table sign was polished off with an Ikea frame, the camera sign laminated (to help it survive being inspected countless times over the course of the day) and the jam jar sign was just printed on an A5 sheet and folded in half. Oh, and if you're wondering about the 'guestbook' being a stack of 6"x4" cards, we're planning on interspersing the cards and pictures from the photo booth with the photographer's pictures in one bit album, rather than having everything all stiff and formal and separate.
The jam jar labels themselves were printed on self adhesive address labels - there were about five types of jam, so Charlotte had lots of fun making the words fit.
I really loved the vintage carnival/circus type fonts that she found (there were circus images on the signs for the mens and ladies toilets, but I can't find a photo of them. I'll add one when I get a chance).
ETA: the program is Photo Impact by Corel.