Kudos are earned at the whim and idiosyncrasies of the one bestowing them – not unlike brickbats except way more brickbats get thrown than kudos are bestowed. In my estimation you will have to duck out of the way of approximately 12 brickbats for each kudo you hope to receive.
No need to worry about your dwindling stockpile though, I’ll share mine with you until you can get back into the swing of earning your own. They hand them out like candy at Pinterest for hoarding pretty pictures onto easily accessible bulletin boards so that everyone else can look at your pretty pictures too.