$13 $30
Lenovo has the Lenovo IdeaPad Gaming 15.6" Backpack (GX40Z24050) on sale for $14 - extra 8% off with code ACC8EXTRA in cart = $13 with free shipping.
Best Diaper Bag Deals, Nappy Backpacks on Sale
$9.35 $20
Amazon has the Ben Sherman Noak Hill Vegan Leather Toiletry Travel Kit (Dome Travel Kit, Black) for $9.35 with free shipping on $25+ or with Prime. Overwhelmingly positive reviews.
$36 $101
PatPat has the 3-Piece Large Capacity Diaper Bag Backpack Travel Set (Multicolor) for $36 with free shipping.
$26 $85
Proozy has the Oakley Mystery Backpack for $50 - $30 off with coupon code PZY95 at checkout + $6 shipping = $26 shipped. Shipping is free with a purchase of $50+. Styles include but are not limited to: Roll Top, Utility, Link, Latch, 90's, Street Skate, Holbrook, Factory Pilot and more.