Hi Bexy,
You can retrieve the items from Leonard.
The walkthrough states:
You can scare him with the slough of the snake or the can of green paint but I think getting his ire and difficulty in pacifying him later is not worth it.
(As Jep) Offer him turquoise liquid.
While his back is turned, go left immediately:
If you do want to try to recover stolen goods, turn to face the palm tree with a nest on top.
To successfully get to the nest, click when the arrow is in the green area of the bar.
Jump to the nest. You can use easy mode on this arcade puzzle.
Once on the nest, look down and open the bag.
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witter
You're welcome.