Free-standing Table Numbers or Hearts with Blackboard Paint
Here are two suggestions for table numbers for your party.b Paint MDF numbers with craft paint in a colour matching your party theme. Or use blackboard hearts for writing numbers on with chalk and reuse them.
How to do it
Paint the MDF number with craft paint.
A wooden heart on a stick with a written/painted number.
Write on the blackboard heart with chalk or with a Chalk marker.