What if you use stolen land to erect your sukkah? On the claim that at the resh galuta's home that this took place. Also, the case of a stolen beam - to be incorporated into the sukkah, which seems to have a much more lenient sentence than if it were used on a home. Basically, a plug to repent, at the very least. Namely, the thief returns only the monetary value of the beam, at least during sukkot itself. Also, the dry lulav - which is not kosher for the mitzvah, except for R. Yehudah, who seems not to be concerned about the beauty of the 4 species - surprising though that may be.