I picked up a glass bowl, pillar candle and two bags of river rocks at Michael's. Everything was on sale and I used a 40% off coupon!
Here's a close-up of the prayer rocks and what the family alter looks like.
Do you have places set aside in your home to help center and focus your prayer? I'd love to hear how this happens in other homes. I should also say that the idea for the prayer rocks is not my own. I saw it somewhere else and tweaked it to fit our family.