We had London tube signs as ours. I went to Flickr and downloaded the coolest tube sign photos I could find, then had them printed and laminated them. This matched the table plan which looked like the tube map!
Stick with numbers - it gives you a bit of a clue where to look in the room. tbh, you can fret and worry about such detail, but people will not remember afterwards, and it will not make your day - nor (more importantly) your marriage any better
Last wedding I went to, the tables had names related to marriage or similar themes - so 'love and kisses', 'diamonds and pearls', 'horse and carriage'... I like the idea of the sweeties though; I'd be scoffing them all, wandering from table to table, shoving handfuls into my pockets.
This will totally out me, but we had Hogwarts lesson; Herbology, Charms, Flying Lessons, Potions, Divination and I think Horcruxes. There was another but I can't remember it. The table centres were themed too, ^so Herbology was a huge basket of herbs, Potions was different sized coloured bottles etc etc. We got married on Halloween, so it all tied in.
We had lines from a comedy programme. Only because we'd used a song lyric from it on the invitations (NOT Monty Python!) and we thought it would be amusing.
We enjoyed the blank confusion from people who'd never seen the programme as some of the quotes were rather surreal. We didn't really have an elegant wedding. We put stuff on the tables like fortune telling fish and those long balloons you blow up that go screeching around when you let them go.
If I was the guest I wouldn't pay any mind if my table was a number or a name, a sentence or a title as long as there was a seat for me!
It's the type of thing that the bride/groom might get a kick out of but realistically won't be of note to the guests either way. Unless as Vivpru said you make the table names relevant to the guests, rather than you.
We had pub names - our respective university locals, a couple each from where we grew up, our current one, and the one we met in. Friends who already had a toddler used the names of Dr Seuss books, and I've been to a few weddings with street names. I love the sweets idea!
We used Dog names....top table was our Dog (Ralphie) then I used the Dogs we had grown up with. Family & friends we haven't seen for years were touched their pets were remembered. Although one of our guests apparently was a little confused why the table was named after something so random, his wife explained it's 'our dog, you soppy sod!' Then he welled up.....awwwww!!!