When you are a summer beer festival and one brewery is pouring beer out of 22 oz bottles and you want to ask for all their emptys. There must have been 4 cases worth.
When your working in a foreign country for a year that outlaws alcohol, yet you still spend all your free time on brewing sites, and designing beer recipes that your going to try when your year is up and your back home.
When you're at a Farm and Ranch Heritage museum with your family - you look inside a little Dust Bowl-era model home, see this little gas stove and tell your 5 yr. old daughter you'd like to brew on that.
...you're at that same Farm and Ranch museum- see this old world cream seperating device for milk and wonder if you could some incorporate it into you brewing lineup.