I buried my big boa when he died a few months ago (lung tumor, very bizarre...). I would have had him cremated, but the vet said the cremation would be $130, and after already spending more than $600 in vet bills I felt that was just a bit over the top. We put some big concrete blocks over the top of his grave to make sure nothing unearthed him. Smaller things I usually bag and freeze, then into the dumpster on trash day, but for 7+ foot boa I thought that probably wasn't the best plan. I wish I'd thought of the taxidermy idea, though...I know a couple taxidermists and that would have been cool!