We did one before Christmas.
Cleared out 2 classrooms for pamper ladies (massages, reflex, nails etc) which were very popular (£5 for 15mins) tho didn't bring that much cash (10% but onyl a limited number available, obv).
Had stalls - took 10% but in hindsight a £10 or maybe £12 fee upfront better.
Jewellery at good prices, posh handmade chocs, crafty bits and teddy bear clothes did well.
Tickets were £3 inc nibbles and wine, treatments could be pre-booked which was popular, traders gave a raffle prize which did well.
We made about £500 which is not bad but will do better next time I hope. Sold about 80 tickets I think.
When are you doing it ilovecurry? I think we did better as a lot of people were looking for Christmas pressies (in Nov) which was the idea. I certainly bought lots with that in mind.