I just bought a couple of musty 1962 issues of Popular Mechanics from 1962. They have huge spreads of photos and plans for building nine great-looking pieces of play furniture by Swedish designers: toy bins and play tables, little see saws and slides, that kind of stuff.
It's basically the DIY, minimalist design DNA of Ikea, plus dovetail joints, minus Allen wrenches, plus birch and pine, minus "wood" made of sawdust and glue--and minus injection-molded plastic. Great stuff, and I'll be happy to scan and email some plans if you're feeling slightly adventurous.
Blackboard cabinet/Toy bin/Table by Nils Jonsson (or Johnsson)
Except a mystery on a designer's site in Japan. With the cover long gone and the pages disintegrating, this dude in Tokyo scanned to a blog most of the contents of a vintage, mid-century Swedish furniture catalogue he found years ago in a used book store in Kichijo-ji.
Pine stool by Erik Ahlen
Very plain, but some very nice-looking stuff. I love the barebones crib and the three-layer trundle beds. And this simple pine stool, which looks so easy even I could knock it together. If I had a workshop. Or even just a freakin' saw. I'll put it in the queue.
Children's Furniture Design from Sweden, mid-20th century [hus.cocolog-nifty.com]