Overview
Instead of finding objects, the kid hunts with each sense: something that smells good, a sound to listen for, something rough to touch, something interesting to look at, and one safe thing to taste. This is the hunt that builds the most language, because every find comes with a description. Plan 25 to 40 minutes; it naturally slows a kid down.
How to Do It
Set a short list, one item per sense. Something to see (a bird, a bug, a cloud shape), something to hear (wind, a bird call, leaves crunching), something to smell (a flower, cut grass, a herb), something to touch (smooth bark, a fuzzy leaf, a cool rock), and one thing to taste only if you have a safe, confirmed edible like a mint leaf or a berry you know.
Walk slowly and let each sense take a turn. The work happens in the describing, so ask open questions: what does it smell like, is it rough or smooth, where is that sound coming from. Resist naming things for them. A kid reaching for the word "prickly" on their own is the whole point.
Tips & Tricks
Hearing is the sense kids skip, so make a game of standing still with eyes closed and counting sounds for 30 seconds. For taste, never improvise. Only offer something you have positively identified as safe, and skip the taste line entirely if you are not sure. The magnifying glass from the kit pairs well with the "see" sense for a long, close look at one small thing.
Variations
Easier, for a young preschooler: drop taste, and do three senses with you modeling the describing words first. Harder, for an early-elementary kid: ask them to record one find per sense on the clipboard with a written description, or to find a single object that hits three senses at once. For a toddler, narrate the senses yourself as you go ("hear that bird? smell this flower?") and let them touch the safe textures.