Walk for five minutes without any specific destination in mind, make something with or inspired by whatever is available where you end up.
I didn't follow the prompt exactly. My Dad and I hiked to the base of Tom's Thumb today, so the destination wasn't totally unknown (though I've never been there before) and it definitely didn't take five minutes to get up there! This beetle is made from plant material I found at the top when we arrived at the base of Tom's Thumb. There's a seed pod husk, dried up grasses, tiny flowers, and a succulent leaf. This was a rush job.
The monolith in the middle is Tom's Thumb, we hiked all the way around it. This was taken about halfway up the mountain.