Good suggestions so far. I would say most people will have eaten, so go light on the food. Some cheese and crackers, some grapes on the cheese platter (green or red, or some of each - but definitely seedless!). You can pre-cut the cheese if you want but not until close to the party so it doesn't dry out. Fruit is nice too because it's "dessert-y" for those who have eaten and healthy for those who have not. If you have time, a really cute way to serve fruit that looks festive and makes it easy to eat is to create fruit kabobs. Get long toothpicks, about 4 inches long. I like the plastic ones that have a little "arrowhead" on the pointy end but you can use plain wooden ones with the little frill on the end. Just don't get standard toothpick length - get the longer ones. If the supermarket doesn't have them, the party store will.
Select a variety of fruits in different colors. Ue any of these: strawberries, raspberries (if firm), kiwi, cantaloupe, honeydew, red or green grapes (unless using on the cheese platter), pineapple, blueberry, mandarin orange segments. Get a small seedless watermelon with no big scratches or dents at least on one side. Remember that honeydew, grapes and kiwi are all green, oranges and canteloupe are both orange, berries and watermelon are red, etc. You're going to alternate them on skewers so you don't want "matching colors" together. Just get an assortment of maybe 6 things. Peel the kiwi, cut large grapes in half, cut the larger fruits into chunks that are similar in size. Wash the watermelon (important) - salmonella can be on the outer rinds of fruits. Cut the watermelon in half and scoop out the fruit from one half, leaving the white stuff and the green rind. Drain the shell over paper towels, and put on a platter. You can leave the paper towels underneath the melon if the edges don't show - that will pick up any juice that continues to leak a little! Use a skewer to poke a bunch of holes in the green rind about 1 inch apart - you can do it in rows or just random. Assemble 3 or 4 pieces of fruit on each toothpick, varying the order. Not every toothpick will have the same fruits so don't try to cram all 7 or 8 varieties onto one pick! Leave 1/2 inch on the pointy end. Insert the toothpicks into the holes in the watermelon rind - don't try to poke holes with the toothpicks themselves as they will break and you will get frustrated. When you are done, it will look like a giant fruit porcupine. It's really cute, lets people choose some finger food, and it's really just one item that looks really varied.
Another option is chocolate covered strawberries - you can buy a chocolate melt or use dark chocolate you melt yourself. Use the large strawberries with the stems on them because that gives people a "handle" for picking it up.
I've also seen frozen phyllo dough cups that are not expensive. They are small, about 1 inch across. Use any sweetened cream cheese filling recipe, and spoon the mixture into each dough shell, then top with a sliver of kiwi or a blueberry or raspberry or one of each. A friend made these recently and they looked so elegant but were really easy.
You can also go to a bakery and get some small designer cookies or cannolis. You can also get some large brownies, put them in the fridge, and when cold, cut them in quarters so they make little bites.
A dish of almonds is nice too and healthy; anyone with a nut allergy can avoid them more easily than in some of the desserts.
Have some little paper plates and cocktail napkins.
You can serve wine, sparkling cider or sparkling grape juice (white only!), or decaf. My experience is that people just don't drink regular coffee at night.
Don't do all of these things - just pick two or three items and go with that. Don't have a big huge spread because it will detract from the party wares.
A party favor is a cute idea but not necessary. A little candle is cute (maybe a fall scent like pumpkin or spice?). Hand sanitizer is a little less charming.
