I am using Illustrator and wondered if there an easy way to wrap my shapes with a line?
desired result (but nicer):
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Contentsitem on the Appearance Panel above this new fill and stroke
Effect > Path > Offset Pathand enter your desired offset amount.
Select all the shapes...
Object > Path > Offset from the menu and enter your desired offset amount...
(Don't worry, the offset command will create duplicates of the original shapes. You won't alter the original objects here. They are all still there, merely underneath the new, offset, objects. )
OK then tap the Unite button on the Pathfinder Panel (
Window > Pathfinder)
Then merely change the fill/stroke of this new object...
(Anchor point clean up is generally recommended after this method.)
If it's the just curves that are difficult for you, then you could try using the Curvature tool. You can lock the objects in your image and use snapping to draw a shape around your existing shapes.
A double click with the Curvature tool creates corner points, a single click creates a curve.
After you have made the outline you could just use an Offset Path effect on it as Scott suggest in his answer
Example outline made with the Curvature tool
And applying an Offset effect