You can make a stink bug trap using a 2-liter bottle, duct tape and a tap light (looks like a hockey puck).
I'm sure that there is Youtube video that can better demonstrate it, but the steps are:
- Cut the 2-liter bottle around the waist 2/3rd the way up the bottle.
- Take the top of the bottle (which now is a funnel) and turn it upside down.
- Place the funnel into the bottom portion of the bottle.
- duct tape the two together.
- place a tap light on the bottom of the bottle.
- duct tape the bottom of the bottle so that the light is only visible from the funnel.
The stink bugs will be attracted to the light, fall down the funnel and can't fly out;)