I've been to a lot of weddings over the years, and seldom do I have any inclination to keep the favor, no matter how big and extravagant the wedding is.
The teas, the sweetly packaged candies, the jams, the herb seeds, however...those were used and enjoyed, and brought sweet memories of the weddings and showers they came from. That's exactly what a favor should do.
Whenever I have an occasion to give favors, I typically choose edible favors. From my daughter's first birthday party this year, homemade strawberry jam and macarons: