Selling

One reminder email for a cart left with items in it.

"Often bought together" on the product page, from the orders: picks with checkboxes, a total and one Add to Cart.

A delivery date and time window picked in checkout, kept on the order and shown everywhere the order is.

"Add $12.50 more for free shipping" with a progress bar in the mini-cart, the cart and the checkout summary.

Gift cards sold as a product, emailed once paid, spent at checkout like money.