I like the scarves & seamless vests for me. Some of my friends swear by the skinnies but they don't fit well on me. Have had some good knitwear (and some not so good!). Cheap cardigans good for everyday, have a couple of boyfriend type ones (£10-ish) which I wear quite a lot with dresses & leggings. Don't like their leggings but love the tights (especially the fleece-lined ones at the moment).
Underwear - bought some cotton shorts -style pants which I like but have had others which were crap - same with bras, the quality seems to vary a lot on these.
DD will only wear "girl boxers" from Primark - the seamless stretchy ones which you can usually get matching crop tops for. She has a couple of pairs of jogging bottoms & zip-up hoodies from the women's section which she likes, and has had a couple of pairs of plimsolls which were fine. I find the girls section pretty crap to be honest but DD can wear a women's 6-8 now so we tend to just do that.
Boys' clothes are fab. Wash well and DS loves them. He likes the coloured jeans & chinos and the print t-shirts. He would like the character ones, but I refuse to buy them!
Oh and we all live in Primark jim-jams! I have some lovely grey ones with a vest top and a fleecy set, and the kids have various mainly fleecy ones at the moment. Yeah, you get the odd twisty seam, and they don't last forever, but at £5 max for kids and under a tenner for women, what do you expect?!!
Hair oil is good and Carmex lip balm in the squeezy tube is cheaper than anywhere else!
I also plan on trying the towels after the comments on here ( friend also says they are v good)!