If yours is a small shop, one way to increase volume is to make inexpensive routed signs. They have a large market. Routed signs can be profitable if you spend minimal time making and selling them. Just look around the town at the houses with the family name and the house number on it. Family names on the house are just the tip of the market.
People are eager to label or identify nearly anything they own with a sign.
If the signs are relatively inexpensive to the customer and take you almost no time and resources, you can easily be routing for dollars. All you need is a small, serviceable router. Of course, whatever model you select, be sure that parts and service are readily available. You don't want to have to send it to the Orient if it needs repair or parts. While carbide bits are the best, they are expensive.