Here are a few things that might help you Frost your Valentine's celebration! Don't forget about older, but still fresh!, Frosting for Valentine's Day here (link)
How cute are these Valentine mailboxes?! You can find the mailboxes usually at Target this time of year and the bases can be candlesticks (think spray painted dollar store ones). I love how she did them at different heights! Source and tutorial
Make cute favors out of squeeze juices and hersey kisses - labels read "here's a squeeze and a kiss from me!" how cute! Source
For a fun breakfast or dessert item... make up some homemade poptarts with "heart" slice in the middle! Source and recipe