Start with the bathroom and the stairs
The bathroom and the stairs account for a disproportionate share of falls in the home, which is why they're worth addressing first, before anything cosmetic. Grab bars near the toilet and inside the shower or tub, a non-slip mat or strips in the tub, and a secure handrail on both sides of any staircase are the highest-value, lowest-cost changes on this whole list.
Lighting matters more than most people expect — a dim hallway or unlit stairwell turns a minor stumble into a real fall. Nightlights along the path from bedroom to bathroom, and brighter bulbs on stairs, cost almost nothing and help every night, not just once.
The clutter and layout changes that are easy to overlook
Loose area rugs, trailing extension cords, and furniture placed in a walking path are common, easy-to-miss tripping hazards — removing or securing them costs nothing but attention. A raised toilet seat and a shower chair are inexpensive additions that reduce strain without changing how independent someone feels day to day.
For homes with stairs and a parent who's starting to struggle with them, a stair lift or a full move to single-level living are both real options worth discussing early, before a fall forces the decision.
Making these changes doesn't have to feel like a signal
Framing matters. Presenting these as "just making the house safer and more comfortable" rather than "because you're getting older" tends to land better and get less resistance. Small, incremental changes made over a few visits are usually easier to accept than a single overwhelming overhaul all at once.