Is communion more of a spiritual act or a physical act? It is both, of course. Just thinking about it isn’t obedience to the Lord’s ordinance, while eating and drinking without faith and the Spirit isn’t a means of blessing, but rather a reason for judgment.
There are a surprising number of tangible things that can distract us from the spiritual nature of the supper. It could be pain, it could be a rowdy kid, it could be a slow row, it could be a dry piece of bread. Keep your eyes on Christ.
But it is also possible for us to be so anxious about keeping our eyes on Christ that we miss all the things about this meal that He delights in. He chose for us to have bodies, that can experience pain or discomfort or fatigue, even death. He knows that. He apparently likes the idea of kids who need to learn self-control, and one of the ways they develop self-control is by watching you be self-controlled in response to their lack of self-control. And He gave you saliva to choke down dry bread if necessary, and He gave plastic to hold our wine so we don’t have to hold it in our hands.
The meditation is: Christ took on flesh and spent His body so that we could live for Him in our bodies, even now through the inconveniences and discomforts, all the way up to dangers. A further application is: if you (or your kid) spills, just let us know so that we can treat it. It’s all His and for Him.