Paraphernalia: Paraphernalia Charge in Missouri

My question involves criminal law for the state of: Missouri.

I was recently pulled over for failure to use my turn-signal. I had just left a friends house in the suburbs of KC and I was headed back to my apartment in KC. Before leaving my friends house, I ate some cake with black icing which stained my teeth and lips. I also put on some of my friends patchouli oil. After pulling over, the cop noticed my broken trunk (tied down with shoestring), my stained teeth and lips, and the patchouli. He asked if I had anything I shouldn't have in my car. I respond, "No." He takes my license and proof of insurance back to his car. Returns, gives me a warning ticket for not using my signal. He then asks me to get out of the car and asks if he can search my car. I let him. While searching, he finds my roommates pipe (my roommate uses me car from time to time, because he doesn't have one). Instead of arresting me, he issues me a ticket for possession of paraphernalia and a court date. He then asks me questions about information I had on situations that had occurred in and around KC. He informed me that he would put in a good word for me for being so cooperative and cordial with him. My question is, what should I do? I understand that the "it's not mine" claim isn't going to fly, because it was found in my car, thus, my responsibility, but I am extremely clueless. I do know that paraphernalia possession is a misdemeanor with a max penalty of a year in jail and a $1000 fine, but I hear that is an extremely unlikely outcome for my situation. I've heard of people being put on probation... is this more likely for me? I feel like I should get a lawyer, but can't afford one. What are my options. I know I have a lot of questions, but like I said, I am completely clueless. Thanks in advance.

-E