OK here goes - Woolworths have put a number of items in the sale which used to be in a 2 for £15 offer. If you add 2 items to your basket from the sale items that are also in the 2 for £15, it gives you the cheapest item free.
e.g. Minnie mouse tin of 50 pencil crayons was £10 now £4.50, minnie mouse paint your own figure was £10 now £4. It gives you the £4 item for free so you get both for £4.50
There are loads of kids craft sets for £4 in this offer so would be £2 each +P&P. I'm getting some to put away as gifts for my boys friends numerous birthdays
***AMEND - Reports below it's also working on Isme and Very sites, various reports of delivery collect+ free not working on Woolworths but seems to be working on very for some***
7% quidco cashback for new customers, 1% for existing.
Site says Collect+ delivery option is free or standard postage is £3.95
Loads of other toys in the sale here not in the 2 for offer- http://www.woolworths.co.uk/toys/e/b/21802,5132.end?sort=price,1#21802,5132
There is also a 2 for £40 offer which works with the sale items and takes £10 off items in this category - but only a couple of things in the sale in this one but good if it's things you want. http://www.woolworths.co.uk/buy-2-items-for-40/e/v/103404.end?sort=price,1