Penny pinching permaculturalists and bargain-hunting mycophiles, brace yourselves! For today, we delve into the fascinating world of DIY mushroom cultivation. Not only is this a treat for your tastebuds and a boost to your cooking skills, it's also a surefire way to impress your friends. “What did I do this weekend? Oh, not much. Just harvested my own shiitake mushrooms. No big deal.”

First things first, mushrooms are not your average backyard plants. No, these aren't sun-loving tomato plants, nor will they be pacified by a simple watering can. Mushrooms, my dear friends, are like the mysterious, goth teenagers of the plant kingdom (though technically, they belong to the fungi kingdom - pedantic, I know). They enjoy a good moody, damp, and dark environment. Ideally, your basement would work, unless it's already home to your moody teenager.

Now, let's get down to business. You'll need a mushroom kit, typically a bag filled with a sterile growing medium that's been inoculated with mushroom spores. Sure, you can get this for around $20. But we're talking cheapest, right? You're on the shoestring budget, the ramen-noodle-every-night level of dedication. So, we are going to do it the old-fashioned way - coffee grounds and cardboard.

That's right, gather up all those used coffee grounds and don't you dare recycle that Amazon Prime box just yet. Coffee grounds are fantastic for mushroom cultivation because they're rich in nitrogen. The cardboard, on the other hand, is just to hold the whole operation together. Now let's say you don't drink coffee. Some Starbucks stores will save coffee grounds and donate them to you for your garden. Just go pick up a 5 gallon bag from them for free. Thats right, Free 99!

Cut the cardboard into strips, soak them in water, layer them with coffee grounds, and add spores (you can buy these online). Roll up this strange burrito, place it in a plastic bag, and leave it in a cool, dark place. Soon, you'll have yourself some homegrown fungus. It's like magic, but less sparkly and more, well, fungal.

But, prepare yourselves. Growing mushrooms is not all sunshine and rainbows (remember, they hate sunshine). It's a journey filled with trials and tribulations.

First off, you'll probably forget about your mushroom project. Nestled in the back of a cupboard, these babies are easy to neglect. Until, that is, you open the cupboard one day, only to find a tangled forest of fungi, looking like a scene from a sci-fi movie.

The second challenge: the smell. Ever experienced the smell of old coffee grounds mixed with wet cardboard? It's a heady mix of compost bin and a neglected corner of a library. Not exactly Chanel No. 5. But hey, all for the love of mushrooms, right?

Finally, you might have to wrestle with your own expectations. You're not likely to grow a Portobello big enough to make a burger in your first go. It's more likely you'll end up with a small, proud collection of tiny white dots.

But take heart, dear fungus fancier! With every passing day, your mushroom growing skills will blossom (or should we say, mushroom?). Embrace the failures, chuckle at the challenges, and soon, you'll be serving up a homegrown mushroom risotto that will have your friends saying "you grew this yourself?" in awe-stricken tones.

And there you have it, folks. The cheapest way to grow your own mushrooms, complete with the scent of damp coffee, possible fungal invasions, and a newfound respect for mother nature's peculiarities. Happy mushrooming!