What to give Jesus for His birthday?
When the boys were younger, we'd bake a birthday cake for Him and at other times we'd create new ways to give Jesus a gift, i.e., buying for someone in need, or we'd all write out our gift (being more patient with others, an act of kindness, etc.) on a slip of paper and put it on the tree.
While these celebrations, acts of service, and growing desires to be more Christ-like are certainly pleasing to the Lord, He's clear as to how He defines love, His love language, if you will:
In fact, this is love for God: to keep his commands.
And his commands are not burdensome... 1 John 5:3