Like Woofie says, lots of plants are easy without a propagation chamber. You can use a simple milk jug, pop bottle, or just stick it in a pot then in a plastic bag. I don't even use a heat mat or rooting hormone either most of the time. I don't do a lot of different types of plants, too lazy. But coleus, pelargonium, sedum, petunias, and lots of others are pretty easy. With sedum you can just break off a piece and stick it in the ground and it will grow.
Karen