I have at least two hops per month through October. One in October is Halloween themed, but most are open theme or just fall themes.
Giveaway hops usually get a lot of traffic this time of year and on into the Holiday season.
Any family friendly item would be good. Especially if it can be used for school/college.
The hop posts will feature a picture of each item and links to the sales page for that item, and your social media links will be used as entries in the giveaways (entrants will follow you on Twitter, Pinterest, Instagram, or whatever soical media you prefer).
Reviews can also be done of items.