This is a shaving bowl I made for people that use just bar soap and a foaming brush to make lather.
Some of the fun features I put in: 1. Snap fit lid for an "elegant" feel and to make it great for travelling without worrying about the soap falling out. 2. Small spikes in bottom to hold soap in place. Since I use the left over soap from the shower once it gets too small, having spikes to press it into is really handy so it doesn't move around. 3. A 2.5" OD (outer diameter) stainless steel ring can be epoxied into the bottom as shown in the pictures (grab it at your local hardware store). It isn't necessary but it adds some really nice heft to it. Tricks your mind into not really noticing that it's plastic and adds a nice premium feel to it.