D.:
It all depends upon your area, really. In Northern Virginia and Washington, DC it would be a toss up - our consignment shops do great business, baby gear always sells at garage sales, ebay is world wide and craigslist is free and local.
If they are items that are New With Tags (NWT) I would sell them on ebay. Research what they are going for and do it that way. Yes, it would require you to ship them but the buyer pays for shipping. If you need help with ebay send me a PM. I'll do what I can. I've been buying and selling on ebay for 12 years.
The biggest factor is HOW MUCH TIME do YOU want to put into this? If you just want to hand them over to someone and let them do the work? Consignment shop.
If you don't mind waking up at 0600 and doing a garage sale - haggling with people - then garage sale.
If you don't mind taking a picture and waiting 1, 3 5 of 7 days for a listing to end? ebay. If you don't use a PO Box you can ship from your house via USPS. You can print postage from Paypal. Simple.
Think about the level of effort you want to put into this and go from there.