Keeping warm in a HH Scout

[Knotty]

Greetings. I recently ordered a HH Explorer Deluxe and SuperShelter. Because of the deal Hennessy was offering I also received two Scout hammocks from them.

Here's the question...I have the SS for warmth but what cheapie solutions are there for my daughter who'll be using the Scout on a 1 or 2 night backpacking trip with me? Timing is late spring in NJ or PA.

Also plan to do some local stealth camping in April with a friend who's short enough to fit in the Scout. Temps could be as low as 40 at night.