If you need to make sure your new IKEA cupboard will fit in your kitchen, you might want to install this Blender add-on.
IKEA Browser allows you to import 3D models from the company's website into Blender with a single click.
The developer, Shish, warns that, unfortunately, not everything there has a 3D projection, so you might have to click around for what you want. Still, this is a great way to save time and see what your living space will look like when you're done with furniture shopping.