Seems like you have a massive chip on your shoulder about several things not worth a speck of your time or energy.
My parents have been the greatest Christian examples of my life, and they don't use a tablecloth or have flowers anywhere in their house.
Personal preference in placeholders doesn't portray a powerful peril to the populace.
IF those Christians around you ARE making a bigger deal of the tablecloth or the flower arrangment or the "church clothes," than they are actually living the Christian life, then yes it is a problem in your area.
But the way you worded your post made it seem like you were angry at the tablecloth itself. not any spiritual issues its treatment may represent.
Always give God credit first.
"Dost thou think because thou art virtuous there shall be no more cakes and ale?"
-Sir Toby, Twelfth Night by William Shakespeare