I got this idea from the blog "The Art of Doing Stuff". Instead of using magnets, like the creator did, I used my hot glue gun (MWAHAHAHAHA) to create a more stable dish
Get your bowls together and find the "best fit" base to base
These ceramic bowls came from my cupboard, all their matching partners were smashed over the years in various accidents
Hot glue around the base of one, position the top bowl over it, making sure they are lined up evenly, and then press down.
Clean up any glue (I used an old spoon handle to smooth out the glue while it was still hot/warm) and then fill with food and water.
You can wrap rope, twine or anything else around the join to hide any stubborn glue that won't move