Nintendo are running a promotion in the US with BestBuy, allowing you to receive free gifts for connecting to the in-store WiFi.
However, the only check in place to see if you're actually at BestBuy is the SSID of your network (the WiFi name) - meaning you can just set your WiFi SSID to "Bestbuy" and receive the items at home!
Unfortunately, this only works in the US, but fear not - here's how to receive the promotional Raccoon Wall Clock if you're outside of the US.
1. Change the SSID of your router/WiFi connection to "_The Cloud" (without the quotes) [you can typically access your router settings by visiting 192.168.1.1 in your browser or bthomehub.home if you're a BT customer]
2. Re-connect your 3DS to your new _The Cloud connection, ensuring you've removed any other active connections, forcing the console to connect to your new SSID
3. Boot up Animal Crossing: New Leaf and take a walk over to the Post Office on Main Street
4. Speak with Pelly and "Ask about a Present."
5. Receive your free gift!
Once you've received your gift you can restore your original WiFi name, however, it's likely that you'll be able to receive the other three gifts when the time comes.
16th - 29th June: Raccoon Wall Clock
30th June - 13th July: Cat Tower
14th - 27th July: Suitcase
28th July - 10th August: Double neck guitar
Note: If you're unable to change your router's SSID or you don't have admin priviledges, you can also change your phone's name to "_ The Cloud" and connect your 3DS to your mobile via a hotspot