Good morning! Certainly, I'd be glad to help. Let's first identify what we have at our disposal:

**Key resources:**

- Basic kitchen items
- Common household items
- Access to outdoor environments
- Basic arts and crafts supplies
- Access to the internet

With these resources, here are a few interesting and manageable science projects you could complete in 7 days:
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**1. Homemade Lava Lamp**

**Objective:** To demonstrate the principles of density and polarity.

**Materials:** 

- Clear container (glass works best)
- Vegetable oil
- Water
- Food coloring
- Effervescent tablets (like Alka-Seltzer)

**Procedure:** 

- Fill the glass about 3/4 full with oil.
- Fill the rest of the glass with water, leaving some space at the top.
- Add several drops of food coloring (choose any color you like).
- Break the effervescent tablet in a few pieces and drop them into the glass.
- Watch your homemade lava lamp erupt into activity!
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**2. Plant Growth Experiment**

**Objective:** To study how different conditions affect plant growth.

**Materials:** 

- Bean seeds
- Plant pots or cups
- Soil
- Water
- Optional: different types of light, temperature, or substances to test

**Procedure:** 

- Plant the bean seeds in similar conditions (same amount of soil and water).
- Place each one in a different condition (e.g. one in a dark cupboard, one near a window, one near a heater, one watered with salt water).
- Observe and measure growth over a week, recording changes and results.
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**3. Shadow Tracking**

**Objective:** To understand how the Earth's rotation affects sunlight.

**Materials:** 

- A sunny day
- A tall object like a pole or stick
- Chalk or other marking tool

**Procedure:** 

- Place your object in a sunny spot where it will be undisturbed.
- Every hour, mark where the shadow falls.
- At the end of the day, connect the dots to see how the shadow moved due to Earth's rotation.
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**4. Homemade Compass**

**Objective:** To create a simple tool for identifying magnetic north.

**Materials:** 

- A needle
- A small piece of cork or foam
- A shallow dish filled with water
- A magnet

**Procedure:** 

- Stroke the needle on the magnet about 20 times to magnetize it.
- Place the needle on the piece of cork or foam.
- Float the cork/foam in the dish of water. It will align itself with the Earth's magnetic field and point to magnetic north.
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**5. Crystal Growing Experiment**

**Objective:** To understand how crystals form from solutions.

**Materials:** 

- A cup or jar
- Water
- Salt or sugar
- A spoon for stirring
- A piece of string or yarn
- A pencil or popsicle stick

**Procedure:** 

- Warm up some water (not boiling), and mix in salt or sugar until no more can dissolve.
- Hang the string into the cup with the pencil or popsicle stick resting on top.
- Wait for a few days as the water evaporates and leaves crystals on the string.

Remember, the goal of these experiments isn't only to get results but also to understand the science behind them. Be sure to research the principles involved and explain your findings. 

Let me know if you would like to try different experiments, on different scientific domains.
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