While certain items can only be obtained as gifts, others can be purchased directly from the inventory store. Here's how:
Open the Dashboard.
Click your Account avatar in the corner.
In the sidebar, click Inventory.
Click Buy Items
Locate the item you'd like to purchase, then click Buy Now
(Optional) If you'd like to purchase the item as a gift, check Purchase this item as a gift and enter the recipient of your gift. You can also provide an optional note to include with your gift.
If there's a balance due, select your payment method. If you've chosen to pay with a credit/debit card, please enter your card details (note: avoid using your browser's auto-fill function to do this as doing so may cause issues with the form).
(Optional) If you want to immediately use the item upon completion of your purchase, check Automatically use this item and apply it to my account. Leave it unchecked if you'd rather save it to your inventory for later.
(Optional) If you're paying with a credit/debit card and would like to add it to your account as a saved payment method, check Save this payment method. This is recommended if you plan to regularly make additional purchases.
Click Buy Now if you're paying with a credit/debit card or your account balance, or use the PayPal buttons if you're paying with PayPal.
You're done! A printable receipt for your purchase can be found by following these instructions.