Every Easter and Christmas it's always the same. I don't have enough ribbons in my Liturgy of the Hours to take care of marking antiphons, psalms, daily stuff, AND the saint. And I sit there flipping around in the book and getting all irritated that they couldn't print the Easter Sunday and Christmas Day antiphons for Morning Prayer in with Sunday Week 1, since each of those days gets used for 8 straight days, but all the other "special" Sundays (Easter 5, Lent 1, Lent 5, etc.) got printed.
So I've taken matters into my own hands and printed out a bookmark with the antiphons for each of those days. Feel free to download and print it for yourself.
Hope this helps you!