SHOES! Not flip-flops, open-back Crocs, stocking feet or bedroom slippers. Real shoes (or sandals) that fasten on the feet, and worn tied or buckled. Or slip-ons that really stay on. Or bare feet on safe surfaces. I have given up my beloved Teva flip-flops after too many almost-falls. And although my grandkids take great joy in sliding around our hardwood floors in their socks, I fear I would break something if I crashed like they do.
Walking aids - I use hiking poles for trekking on uneven ground even in some parks with rough paths, and my friends who are unsteady also use them, or canes.
Sue