Can I Build a Simple Optical Device with Just Two Magnifying Glasses?

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Building a simple optical device using just two magnifying glasses is feasible and can be done affordably. Telescopes and microscopes are highlighted as the easiest options for this project. Participants share that constructing a telescope with two magnifying glasses is straightforward, and there are resources available for guidance. There is interest in finding affordable magnifying glasses for purchase. Overall, the discussion emphasizes the simplicity and cost-effectiveness of creating basic optical devices.
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Everyone in our class needs to build a lens optical device such as a projector, camera, copier, telescope, microscope, solar cooker, etc. We will need to include a ray tracing diagram. Has anyone ever made a simple device with lenses? What do you think will be the easiest and cheapest? Thanks
 
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Telescopes are very easy and cheap. A microscope would be relatively easy as well. Solar cooker? Hah.
 
Any other opinions?
 
I've read some informational articles about building telescopes and it says that all you need is 2 magnifying glasses? Is it really this simple? If so, I'm going off to the store to buy magnifying glasses. =] Does anyone know where they sell cheap ones at? Thanks.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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