Just a thought from my punk rock days, in reply to luvtosew’s bit about tattoos:
Tattoos can be a form of mortification of the flesh, a very permanent one in fact.
A lot of the “Christian” punk rock scene will get very religious tattoos as a means of remembering certain things, including the idea that when we see them, or think about them, we will remember to live purely for Christ. This is also why the sXe (Straight-Edge) crowd decries practically any chemical additive (including caffeine for many extreme practitioners), as it prohibits us from pure living.
Now, in regard to Leviticus 19:28, that verse is about mortification (cutting and tattooing), for reasons of the worship (adoratio) of the dead in the form of idols, and not worship of God; though, the use of tattoos in worshiping God is never prescribed specifically in contrast.
A dissimilar example of the situation as basically described in Lev 19:28 would be someone getting a “praying hands” tattoo, or other religious symbols or iconography. The litmus test in that situation is that the person is not actually worshiping (adoratio) the thing or concept portrayed, but can actually use the tattoo as a sort of double purpose medium: mortification during receipt and healing, and as a sacramental device once healed. Heck, you could even take the priest along to do some blessings on for such a permanent sacramental!

Also, in the case of tattoos commemorating the dead, and not engaging in their worship, this is also acceptable.
Why? Because if the argument is in relation to Lev 19:28, it’s a very illogical step from what it says to what it’s become in non-Jewish, Christian circles. Socially, I understand the prior resistance to tattoos as a normal thing. Now, it’s not a social issue, and it’s never really been a spiritual one outside of prescribed perimeters.
If the argument is in regard to the idea of the body being a literal temple and not a figurative temple for the Holy Spirit, perhaps all these people holding that view should provide the Holy Spirit with a menu to choose from for your daily meals, ask the Holy Spirit if He too finds that shirt to be His favorite, and how He truly feels about Coca-Cola vs Pepsi.