Short answer: I worked my butt off.
Primula Primroses before and these were the last two they had. The Species Tulips (Tulipa tarda) were just too cool, and they now reside out front. And the little tiny tree is a Redtwig Dogwood (Red Osier to our friends out west, Cornus sericea to everyone else). Technically, it's a shrub. But it'll flower, and it'll fruit, and it may get to be around three times as tall as it is now. (I don't know if there are any hard and fast rules as to what gets to be called a tree and what gets to be called a shrub.)
How about an Arbor day song sung by a Cardinal with an odd-looking beak who can apparently alter his size at will? I can assure you that when I am very old, when I forget everything important in life, I will be singing the line about how "that's where squirrels spend their time!"