I first tried this idea a couple of years ago. I bought a package of small neon rectangle stickers and wrote the names of all of my relatives on them and stuck them in high traffic locations. Pray for Joseph when loading the dishwasher, Titus when using the toaster, Grandma when using the stove, Hannah when turning on my bedroom light. It worked really well for at least a few months until I became familiar with the locations and didn't notice them as much. A few things I realized - names on light switches were more easily missed, names on places where you stand or sit for a period of time continue to be noticed, names in unusual places are noticed, but not as frequently.
Most of the old names have worn off or been removed, but I've started a new round. Most of these are names of couples. The couple who's husband is out of work, the couple who's wife has cancer, the couples in our shepherding group, couples in my family. I've been making a point of putting a name on a sticker whenever someone asks me to pray for them, I tell someone that I'll pray for them, or I feel the need to be in prayer for a particular person. There's nothing worse than telling someone that you'll pray for them, and then forgetting until the next time you see them.
The names are in better locations based on my first experience. The stickers on my computer monitor and kitchen window above the sink are well prayed for. The stove and the book crate beside my seat on the couch are great spots too.
It is my hope that sticker praying will allow me to say with Paul, "I have not stopped giving thanks for you, remembering you in my prayers."(Ephesians 1:16, NIV)