I tithe to my parish, the FSSP, and to holy orders of religious (e.g. the Dominican Sisters of Mary, Mother of the Eucharist.)
Diocesan appeals go right into the round file. I have been tempted to write a note to the bishop saying I’m not giving to the diocese until he ends his passive resistance to Summorum Pontificum, but I don’t want to cause trouble for my FSSP parish.
I gift what I have to PFL and other folks who are doing God’s work for the Church. I just volunteer at my parish.