I am always enthusiastic about ways to *make* a rug myself because why? Because rugs are expensive and never come in the color or size I have in mind.
I've been crocheting one this week with great satisfaction for a completely different reason though--it's using up my cotton jersey scraps. The long, oddly-shaped, useless ones.
What do you need to do this? A rotary cutter (make sure it's sharp, not like in all those other tutorials that encourage you to use a dull blade, right?), cutting mat, and big fat crochet hook. Not even scissors, and there's no sewing. And no threads, best of all!
First, cut those strips. About an inch wide, and they can be across the grain, along the grain, or ignoring the grain. Sometimes mine aren't even straight, they curve around a big wide corner. Crazy, I know. Do not use a cutting ruler, just eyeball it. As you finish each strip, take the rotary cutter and press down on the strip about an inch from the end, so you get a little slit cut just like you see here.
They look like buttonholes. You are going to join your strips with these. Match up the two ends you want to join, and lay New Strip over the end of Old Strip. Match up those buttonholes and poke them open with your fingertip.
With your other hand, take the free end of New Strip and bring it up from the bottom through both holes. Pull gently till the little foldy join is snug and secure.
Attach all five thousand other strips. Just be sure that you loop them together like this right onto your "live" strip. In other words, don't put together a whole long chain offstage and think you'll join them to your crocheting. Because you'll have to pull the Whole Chain through that little buttonhole. Or sew or tie it on. And if you do it my way, there's no sewing *or* tying!
And crochet it!