I also did a butcher block top. Cut it down and routed to perfectly flow around what passes for a "straight wall" in this house, spent entirely too long sanding and finishing.

Then put it on some IKEA drawer blocks, because I want drawers, but I'm not equipped to build those in any reasonable timeframe.

Cutting down a desk top is something you can do with sawhorses and some good weather. More intricate things need an actual workshop for good results.

Unless you like the look of veneer on MDF instead of butcher block wood. I think anyone considering IKEA is probably interested in the IKEA finish. After sanding, stain &/ seal is another step people like to avoid

I did something similar, but just bought the wooden desk top from Ikea. Sanded/stained and added some standing desk legs. Perfect balance between customization and not building from scratch.

I'd be hesitant to recommend a novice to pursue a glue-up/planing project if they weren't already interested in woodworking.

Eh, most IKEA desk hacks is to buy the wooden kitchen countertop, cut it to shape, and put it on some drawers. So you're not really describing anything different.

A butcher block desk with 4x4s for legs is pretty simple and forgiving. Matching the quality of appearance of a lot of other IKEA furniture would require quite a bit more skill and tools.

Like a Kallax, unless you're a real wizard you couldn't cobble one of those together without a lot of skill.

I have a few of those butcher block tops because I scaled down my shop, but I just can't throw them away. one was purchased 50+ years ago and my family used it as a breakfast table. they make excellent work benches and tables. they're robust and attractive. really all you need is a belt sander and some food safe mineral oil and you can completely resurface them if they get funky. I usually just weld a piece of 1/4" angle to a square plate for legs and weld a nut at the bottom for a threaded foot, but you can really do anything. it absolutely lovely to have a clean butcher block top for food preparation.