If you are feeling creative you can give tables names instead of numbers. This is very common for weddings. Numbered tables are less work and easier to find if they are laid out logically. Named tables add a bit more atmosphere and are useful if you are worried about guests being offended about not being seated on "table 1".
Possible table naming themes include:
You can also liven up numbers, for example include a picture of the hosts at age 1 on table 1, at age 2 on table 2 etc.
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