Most of my border Canada-US crossings have been uneventful, but a couple stand out. Once I was going to a two day conference in Vancouver and had to leave Seattle at about four am to get there on time. So as not to awaken my husband, I kept the lights in the bedroom off as I packed my small bag. Unfortunately, I forgot my passport, left on the bedside table; this was only a couple of weeks after the new rules on border entry requiring passports had come in. I didn't realize I'd left the passport till I was practically at the border, so decided to give it a try anyway. I got into Canada just fine with my driver's license (after the obligatory questions about guns and pepper spray, neither of which I had) just a warning to bring the passport next time. But I was worried about re-entry to the US, which was still 9/11 touchy about borders, so when I got to my hotel, I asked my husband to fax me the face pages of my passport. On re-entry to the US, I presented by driver's license, the faxed passport info, and was told that this was completely unacceptable, told to exit the car and kept waiting inside the border office for more than four hours. Periodically someone would check on me and tell me that I couldn't re-enter the US with my documentation. Finally, after I was kept waiting long enough to serve as a suitable punishment, they let me back into the US--though eventually I would have gotten deported from Canada anyway, as I don't have landed immigrant status!
On an earlier trip, when a driver's license was fine for travel to and from Canada, my husband surprised me with a trip to Victoria BC by float plane. He instructed me to pack a bag for me and our five year old daughter sufficient for five days for a 'mystery trip.' It was a superb flight over the islands and we landed in Victoria harbor, where a customs boat came out to admit us. Problem was, my husband and I both had our driver's licenses but we had no ID for our daughter. The agent took her aside from us, and asked her, "Who are those people?" She replied, "They're my parents, not kidnappers." The customs agent let us in anyway...