This is surely one of the simplest but most effective table plan ideas: using beer bottles as both vases and as a seating chart. (Useful and beautiful. Marie Kondo would be so proud). Plus, it’s FUN! You get to drink ALLTHEBEER. Or wine, or cider, or whichever nicely bottled drinks you can get your hands on. (But always drink responsibly, kids!). Here's how to do it.
As you can see from the lettering on the glass bottles, you don’t need to be amazing at calligraphy for this DIY to be effective. Before I gave it a go, I was worried that the bottles might look a bit rubbish, as my calligraphy skills leave a lot to be desired. However, I found that just my normal handwriting worked pretty well.
Another idea would be to recreate this table plan on a rustic wooden ladder or steps: basically anywhere that you can rest bottles at varying heights. Have fun drinking and DIY-ing! But please do both responsibly.