You are gonna love this!
I am sure we all worry sometimes about beer not carbonating in the bottle, especially the ones with higher alcohol content. So, I figured why not just bottle one or two of my brews in plastic bottles, ones that would hold carbonation of course. Then, a couple/few weeks into carbonating, just give the bottle a squeeze, you should be able to tell if the beer is flat or carbonated. I hate wasting a bottle of beer by opening it, hoping for some carbonation, just to find it still flat.
Don't know if anyone else has had this idea, but I just about smurfed in my pants when I thought of it.