I keep a "safety lanyard" around my neck- little Photon light and and a Fox 40 Micro whistle; one pants pocket has my compass tethered, the other my folding knife (which has a firesteel & tinder attached to the tether)

my inReach Mini is tethered in a shoulder pocket of my pack

all my tethers are small diameter cord- sometimes called accessory cord, most rated ~ 100 lbs