In international travels, we sometimes have more luggage allowance than we need and sometimes we have less. For me, in my last few visits, I was traveling very light but had about 30KGs of allowance. I saw a fellow passenger ahead of me (who was traveling with an infant)...
One problem I face a lot is tracking warranty/guarantee for purchases. I usually snap a pic onto evernote or some such app and hope to find it at a future point. And many places still require copy of bill to claim warranty. This is quite painful and maybe easily...