Hi Ris,
Welcome to SaleHoo!
Irene has recommended a great supplier, but in my experience, the online market for wedding favors is generally a flooded one.
This means there are more people selling the items than there are buyers.
This can make drop shipping favors quite difficult as your prices will be higher than sellers who are buying wholesale.
I wrote a blog post about wedding-related niches last year that I think you should take a look into:
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Good luck!