Sand Baths:  Hamsters Use Them as Potty Places and to Bathe  
Niteangel wins again. However, there are some other options such as the bamboo silverware drawer organizer found at Target, sorry no link, but they are easily found. They come in 2 sizes and depending on your cage size you can choose which will fit best.  If you want to stick with the Niteangel theme, these sandbaths are amazing! Again, many different size options are available.
 
Almost any container can work for a sand bath though such as large ceramic bowls, glass baking dishes and acrylic paper trays work. I do not like plastic food storage containers because they are easily chewed so possibly not safe plus, they soil quickly. I also do not recommend tin baking sheets or foil items. To maintain sand and help it last longer it is important to strain it daily or every other day depending on how quickly it gets soiled. I use dollar store strainers and pancake mixing bowls for this. 

As for which sand to use, there are many acceptable ones like Zoomed Reptisand. I use the Flukers All Natural Dune Sand, but of course Niteangel also makes a safe sand surprise surprise! Even most Children's play sands is good, but what you DON'T want to use is a sand with calcium, artificial dyes/colors or that contains silica. And one brand created especially for small animals called Tiny Friends Farms is not safe at all and neither is any kind of Chinchilla bathing dust. Rember sand is what hamsters need to regulate the oils in their coats and use as a potty, NOT DUST, which is hazardous to their respiratory systems.