So with my new Les Paul, I started researching strap locks and came upon this thread. I had read about screws from different strap lock manufactures not matching your guitar, toothpicks, etc. etc. I found myself very turned off by that solution.

The Grolsch washer suggestion was very intriguing. Looking on Amazon I saw Fender is now even selling "strap blocks" that look supiciously just like these washers, except they say "Fender" on them, and you get one set of red and another of black.

I bought some washers at Home Depot, but they didn't work out because they were too stiff. So off to the liquor store I went and was pleasantly surprised to see just what I needed in stock - a 4 pack of flip top bottles of Grolsch. 2 washers have been liberated thus far! What a great and clever idea.

I could take a sharpie marker to blacken the washers so they match my strap, but I think I'll leave them as they are. It's an interesting conversation piece. If I ever notice some red dot looking thing on somebody's guitar strap button, now I know what it is :-).

So thanks for the suggestion!!