1. I REALLY HATE THE PACKAGING THEY NOW USE FOR --
Condiments: Heinz ketchup, for example, is beginning to be sold in a flattish squared plastic bottle, a type of bottle I associate with motor oil, not food. This older shape, pictured here, was okay,

but then it got squarer. With the newer bottle, if you want to get all the ketchup out, you'd have to get a box cutter and hack it open, and scoop out what is clinging inside every corner.
Mustard bottles are becoming squarer, and mayonnaise too is getting flatter, and has the cap on the bottom. Which at first glance seems like a better way to package it, but actually unless you hack it open, a lot is going to be unreachable. At least the glass jar is still available for mayonnaise and most mustard.
My favorite salad dressings now have snap-down hinged caps which hurt my hand to open. I long for the old screw-off caps. My hands are getting more vulnerable as time goes on so I think I'm just going to buy a few of those old squeeze bottles that restaurants used to put ketchup and mustard in and change my ketchup, mustard, mayonnaise, and salad dressing into those. I already use one for vegetable oil, because the big bottles are so easy to spill.
Shampoo and Conditioner:
These, too often, are put into another terrible square-bottomed bottle; just look at most of Pantene's products. It's very hard plastic, too, and if you've ever tried to cut through one of these with a scissors you've discovered some new bad words you didn't realize you would ever say.
Conditioner is so expensive that I always cut open the container and get every bit out. If you don't at least 4 tablespoons are usually left in there. And now I'm thinking I should look for a large plastic jar to put the conditioner in.
ANY electronic product:
Most of us have slashed a finger or so when opening that hard, hard plastic which encases nearly every electronic product, non-paper office product, toy, small decorative item, etc., etc. My brother mailed me a new box cutter to help open this type of thing, but you really have to be careful not to cut your own wrist or chop off a finger or two when slicing open these packages. What, I ask helplessly, is the NEED for this uberplastic? Is it cheaper than a cardboard package, makes for safer shipping than no package at all, or WHAT??
Soon maybe I won't be able to do it, and will have to ask the cashier at the store to open it for me before I take it home. Like at Starbucks, where I hand the cashier an IBC Root Beer and ask if he wouldn't mind opening the cap for me. They always tell me, "But it's a screw-off cap!" I say yes, I know, and it's a little hard for me.
What do old/arthritic people do about these packages? Not everybody has an able-bodied son or daughter or whatever around to open it for them.
Okay, that's enough curmudgeonism for now.