Any ideas on how to replace a small halogen bulb in an outdoor wall accent light. The bulbs are small and the light cups are long and low to my planter I can't see and can barely get my fingers up in them.
You need a suction cup
Electrical lighting fixtures with recessed bulbs often come with a suction cup. It's a odd device to have in the package if you don't realize it's purpose so they often get thrown away with the packaging. Fast forward a year or two and you need to change the bulb.
You simply push it against the bulb and twist. They come in a variety of styles and even come with extensions to change ceiling fixtures from the floor without a ladder or stool.
I think you may be talking about the really small, friction fit halogen bulbs, that are somewhat long and skinny. These just get pushed into the socket, rather than twisting them in, and are just held in by friction.
I have had to deal with these in car interiors, and found a great way to get them in and out is with a small piece of tube or hose that fits snugly over the bulb. If you already have the replacement bulb, you can see if you have some hose laying around that fits, otherwise, take it to the hardware store or automotive store and see if the vacuum or fuel hoses will fit.
Then you just take your piece of tubing, push it in the light fixture so it slips over the bulb, and then pull it out. And do the same in reverse to get it back in. Same concept as the other answer with the suction cup, but this may work better for this specific kind of bulb.