My son has, on three separate occasions, found it necessary to write in crayon on my LCD TV. To be specific, this is a Samsung 46" LN-T4665F TFT LCD, and I've used this procedure three times since 2008-05 with no ill effects whatsoever. This isn't going to be quick, so set aside a fair amount of time.
Supplies:
- Peanut Oil - I bought mine at the grocery store near the other cooking oils.
- Window cleaner - I just use generic Target window cleaner.
- Paper towels - If you're worried about scratching (I've never noticed any), use a few soft towels or cloths.