Hi Amberzak
I do tend to keep spare pens in my bag all the time, plus another one at school, although they only get used once in a blue moon - the one time you forget them though would probably be when you needed them! We also have spare cannulas and inserter at school and I keep batteries with me as well, although we get 3 months usage out of one set of lithium ones! The Combo actually takes standard AA batteries so if all else failed you could buy some; get Roche to send you theirs though when you order cannulas etc, you get them free and they last longer!
I don't always take spare cannulas with me, it depends how far we are going and how long for. If we are staying local and can get home quickly then I wouldn't bother. If we're going anywhere overnight then I definitely would. But i've always got the pens to fall back on.
At night daughter has a little cuddly toy to put her pump in - the Roche rep gave it to her, but I think you can buy "pump pets". She puts it in that and then just lets it trail round the bed. We've had a handful of incidents of cannula falling off/tube disconnecting from cannula at night, but very rarely and I think only when they weren't attached properly anyway. We did have a lot of problems with cannulas for a while, but it all stemmed from one incident where the inserter didn't fire properly and it was all a bit traumatic, with the result that she was then terrified of cannula insertions for about four months and we had a bit of a nightmare getting her to let us put them in, and because she was tensed up I think quite often they didn't go in right and we had a lot of failures. Eventually it dawned on her that it would be better to get it over and done with quickly, because a) it's less painful and b) cannula more likely to go in properly, so since then because she's more relaxed about it all we've had very few failures.
I think the original incident was a bit of an unlucky fluke which is unlikely to be repeated so I hope that doesn't put you off! We certainly have had no insertion problems since.
Hope that helps 🙂