my technique is quite simple -

hard boil eggs and peel (the hardest part)
heat up a brine of white vinegar, garlic powder, and pickling spices
put egs in a glass container - add brine....and you're done

i have added whole hot peppers and they are quite good
also have added onion slices
you can also poke egs with a fork and it helps them suck in the brine

i pickle sausage the same way

enjoy