Haven't been on for ages as our internet connection is playing up.
So it's probably already been linked and I just can't get to watch it, but just in case it hasn't, there is a youtube video of MK folding socks, knickers, etc. at
Bertie I also have a Malm chest of drawers, and have modified my folding of knickers and socks so that it fits to about the exact height of the drawers. What I've been doing is: knickers laid out flat, then folded in at each side (i.e., two folds, one at each side) so that you basically have a narrowish tube that is almost the shape and size that the inside of a toilet paper tube would have if you squashed it flat, IFYWIM. They would not stand up alone, but are held in place by the other things (socks) in the other section of the drawer.
These are then put into the drawer standing on end with the newly folded ones always going in at the back, and older ones always getting taken from the front.
On the other side of the same section, socks have been folded, in pairs, into half once only, which means, for the size of socks that I wear, that they also just fit the height of the drawers.
So basically everything is being held in place upright by the pressure of everything around it, but even with a week between washing, it still manages to stay tightly enough together to not fall down.
I agree on clothes and books being the most sentimental items for me! There is one whole category of clothes (tops), that I have put off until last, as there is no way I am ready to go through them yet. IMO, starting with underwear is probably the easiest way to get into it, as there are usually so many items in socks and such like that do not bring joy.
Wrapping paper for me: I repurposed a largish square rattan container - think it was meant to be either a rubbish bin or one of those things you can put large pot plants into so that the pot is hidden. Anyway, it's about a foot high, and fits perfectly into the base of our broom/miscellaneous items cupboard, with just enough room for the broom to stand upright next to the container. All long, thin, hard-to-store items are now in there on end, so: rolls of wrapping paper; a couple of posters that are rolled up at the moment, but will probably get rotated with other at some point; a picnic blanket rolled into a sausage shape; and a feather duster with the stick end basically stuck into the rolled picnic blanket. So kind of an eclectic mix, but all fitting into the category of: long, then, needs to be stood on end to be stored most easily.