This is going to sound a bit silly, but I think it’s worth noting. I have two powerchairs, so if I break one I can use the other while it’s being repaired. I’m supposed to use them both equally in order to level out wear and tear, but I must confess I tended to just use one while the other gathered dust. I suppose it was kind of a habit. I realised the other day why this was, though: only one chair had a bag on it’s back, and because of the way it was attached, couldn’t easily be swapped. So if I needed to buy anything when I was out and about, I could only take the one chair. It’s silly but true. The solution is, however, simple: I now intend to buy a second backpack as soon as possible.