I’ve been told my local Episcopal parish has a Saturday evening reflective healing service where communicants receive as well by passing the blessed bread and wine to each other. If for some reason someone does not want to receive one or the other or neither, they can just cross their hands over their chest so the person to their right would know that they do not want to receive and then they would give it to the next person. Or a person can simply tell the person next to them that they do not want to receive and that they should continue on to the next person.
At their Sunday contemporary service, communicants receive standing. After receiving the bread, if one wants to receive wine and if they have taken the bread by hand, they offer the bread to the person serving the wine. He or she will take it, dip it into the wine, and place it in the communicant’s mouth. If the bread was taken by mouth, a person may then directly sip from the chalice. For those preferring grape juice instead of wine, grape juice is offered on far right side of the altar. If someone does not want to receive wine or grape juice, but would still like to receive a blessing, they can simply approach with their hands crossed across their chest. Of if a person prefers to pass by and head back to their seat, that is fine too.
Their other 2 Sunday services are the more traditional Rites 1 and 2. I suspect there are communicants at those services who kneel but I am less familiar with those.