If you have anyone in your family who is likely to need home care or special equipment, such as a walker, you really should check out a few estate sales before buying anything brand new. If you know what a good quality piece of equipment looks like, and you've done your homework on what they cost new, you'll be amazed at how cheaply these types of items can be found, when children are trying to empty out their parents' home.
But one thing I would suggest that you might not think to look for, until you actually need it for a loved one, is to be on the lookout for the large sections of artificial fleece that will sometimes show up at such sales. These are extremely expensive to buy new, and it's not unusual to walk away from an Estate Sale with one for just a couple of dollars. They are fantastic, not only underneath a bed ridden person, but also as an under pad in that favorite chair, cushions for elbows and heels, and the perfect soft material to put between knees and ankles. They wick moisture away from the body, are strong enough to act as draw sheets, wash and dry quickly, and can be bleached, if necessary. And when the time comes that you need to change Depends in the bed, they make it very easy to tuck the dirty one under and pull it out without stressing tender skin as much as using just a draw sheet does.