Here's a video showing how I made my small parts washer. It comes in handy when I take apart guns or need to polish small parts. You can use dry abrasive material in it to polish small metal parts or you can use it like I did in the video to wash parts in a mild solvent. It has also been useful to agitate parts and remove air bubbles from epoxy laminates although it would work better in a different configuration (vibration table) for this purpose. Total cost of this project was less than $10 in materials.
Hope you found this useful, Thanks for watching!