Clothes and stuff for Swedish preschool + The world of Swedish second-hand

You will get the exact list from the preschool (förskola) your kid will start at, but it doesn't hurt to start preparing a bit ahead of time, especially if you (1) don't want to spend a fortune, (2) don't want to chase rain mittens on the same week as everyone else does, (3) want to be mindful of resell value for the big-ticket items.