modular altar as representation of the gathered community

some new thoughts regarding the modular altar:

each person in the community has their own piece,
so you can see who is in the room by the pieces of the altar -
it is a readout of the gathering

each piece of the altar is a mark of belonging, a badge of membership for its owner
could there be a ceremony of membership when a piece is given?

what could the pieces be made of?

wood - sculptures, carvings, like chessmen
[if a chessboard symbolises war, what board symbolises community?]
metal - jewellery or components
ceramic - vessels, ornaments
glass - vessels, ornaments
knitted - though can’t contain bread/wine!
cuddly toys
candlesticks
toy cars, toy trains [could the board be a track?]
lego bricks
Bearbricks
Barbies??

could this stuff be second-hand [greener, symbolises redemption]?