making your own liqueur from scratch is quite easy! i am calling it a 'passive hobby', as most of the time all you need is alcohol, sugar, and the ingredient which gives taste. the main ingredient is being patient! . these make perfect presents, but start early!
here are the recipes of what i have made so far. often i make tiny batches just to see how it tastes like. more can always be made later. make sure you label and write down everything well, as time and quantities is what makes a drink great - or not.
there are plenty of good instructions on the web already. here is a short 