What can I do if I'm on probation and missed my court date for drug paraphernalia?

If you have a paraphenalia charge and your probation officer finds out about it (or if you are required to report any tickets / arrests / contacts with police - look at your terms of probation to see) or you don't tell your p.o., then you could get a MTR. The law violation is more than sufficient to trigger a MTR. Failing to appear will result in a warrant - another headache. You need to get a lawyer and get on top of your situation.