I am just sorting xmas pressies at the mo and have three year old twins to buy for. Their mum has requested something to help with their numbers-plenty of stuff around to choose from. Question is should I get them identical presents or slightly different stuff on the same theme. I am struggling to work out the point of one household having two identical jigsaws/same book (for example) -wouldn't it be better to have different things they can swap and get more learning out of? Or in the interests of fairness should they have the same stuff?