There is definitely a market for bespoke individualised items... just look at etsy, not on the high street etc. Make stuff for weddings and you can make a killing as people just spend spend spend. Nice rustic signs, table decorations etc.

That sort of stuff, especially where personalisation is required, is in my opinion much better suited to the cottage industry than the bigger boys. When I got married the wife wanted some laser etched wooden hearts for the save the dates, we found some on etsy I think for 80 quid... thinking that was a bit much for a few quids worth of wood and a bit of laser time I went around looking for quotes and the big places were coming back with quotes in the many hundreds, which just isn't realistic.

We also spent quite a lot of time making nice things like wood slices for the central table decorations, some nice rustic signposts pointing to the various areas (toilets, photo booth, bar etc etc)... most people wouldn't be able/willing to make their own and happily spend decent money on that sort of stuff.

Perhaps that gives some ideas for you. Certainly would be enough to get a little money coming in at least. Not as good as hanermo's suggestion probably, but very low-risk and easy to get up and running with to see how it goes.