Welcome to MP!
First maybe we should know what you mean by small and what you mean by cheap-ish. I have found those are relative terms and what one person thinks is small is not to another person--the same with cheap-ish. So what size are you thinking about and what is your budget? This is one of those hobbies that does require certain things or you are not going to get much out of it. And as it is about a 4 month process from seed to smoke, we hate to see someone spend 4 months pouring love and energy into their plants to only end up with a very small about of bud.
I am a big fan of grow tents. They come in a bunch of different sizes and are easy to put up, move, and take down. A good tent will provide the 100% dark you need during flowering--something that can be hard to get in a closet.
So, why don't you expand a bit on your post and let us know your specific circumstances and we will better be able to help you.