Hey guys sorry about the delay, I wanted to say thank you so much for all of your help! I was completely blown away by your sleuthing skills and advice, what an awesome subreddit this is :) I hope you all have a fantastic day! More on reddit.com

They don't make it :( You can maybe look into fold down desk hacks using the narrow IVAR shelves. Sometimes people hack them using one wide shelf as a fold down table, mounted onto the narrower set (which must be secured to the wall so it won't tip). The table suggested to you already is used in some hacks with IVAR too. IVAR's own fold down table works well. All of this options work, but if you don't want anything resting on the floor, you'd have to cut them in half and wall mount them, but then the weight could be an issue. The reason the desk you posted is so narrow and made of chipboard (if it's the kind sold here) is it's a lot of weight to ask of a wall, especially with the torque of putting it up and down frequently, plus storing heavy desk stuff in it. If it was my project, I'd have a chat with a local carpenter and just ask for a custom job, or help to make it. Best of luck to you! More on reddit.com

google for "extendable console table". you can buy the rails online and install them on the kallax. More on reddit.com

Could you buy a normal ivar shelf and cut the front off before the notch? I had a look quickly on the website and that's what the bottom shelf looks to be. Obviously you'd need the tools to do it, but it's still an idea. You could ask go to the customer service desk and say that you moved and your bottom shelf got cracked or lost, or something, and ask for a replacement. You may have to pay as it's a larger piece, but they might be able to order it for you :) More on reddit.com