Mason jars are perfect. You can get a 12 pack of them for like $10 from Walmart.
Size is up to you, I'd rather get a bunch of smaller ones over a large few.
Brand new, available on amazon https://www.amazon.com/Ball-Pint-Mason-Jars-Set/dp/B00B80TJWQ and the other one https://www.amazon.com/Kerr-519-Mouth-Bands-32-Ounce/dp/B00CP5KWEC/ref=pd_lpo_vtph_79_tr_t_2?_encoding=UTF8&psc=1&refRID=Z7YN6V2T4F9P4V35JNHN Funny to check back later if one of the two companies makes a mention of them that they sponsored them.
Cross posted this to r/weddingplanning, but here are the table numbers I made for my Sept wedding. http://imgur.com/a/BrpJ1