For second grade students, you can write a paragraph about your favorite toy puppy from the following aspects:

1. Appearance design: Describe the appearance design of the toy puppy, including its Details such as color, size, shape and presence of hair. Whether the design of the toy puppy is cute, realistic, or has special design elements, such as clothing, accessories, etc.

2. Interactivity: Whether the toy puppy has sound or movement functions. Whether it responds to sound or touch. If these features are available, describe how they work and your favorite way to interact with them.

3. Play experience: Describe your interactive experience with the toy puppy during play. How you play with it. Would you like to role play with it and imagine it is a real pet. Or you just enjoy playing with it, listening to its sounds or watching its movements.

4. Emotional connection: Describe the emotional connection between you and the toy puppy. Does it make you feel happy. Is there a special memory or emotion associated with it.

5. Special functions or characteristics: Are there any special functions or characteristics that make toy puppies your favorite? For example, does it play music or has hidden pockets to hide small items.

Techniques for describing toys:

1. Clarify the characteristics and type of the toy: When describing a toy, you first need to clarify the characteristics and type of the toy, such as what type of toy it is ( For example, dolls, cars, building blocks, etc.) and what characteristics they have (such as color, shape, size, etc.).

2. Use figurative descriptions: Using figurative descriptions can help readers better imagine what the toy looks like. For example, a cute stuffed toy can be described as "It has a round head, a chubby body, a short tail, and is very cute."

3. Use metaphors and personification: Metaphors and personification can make the description more vivid and interesting. For example, you can describe a cute doll by saying "It is like a cute elf, sleeping with me at night."

4. Pay attention to detailed description: Detailed description can allow readers to have a deeper understanding of the characteristics and details of the toy. For example, you can describe the texture, pattern, color and other details of the toy, as well as its physical characteristics such as size and weight.

5. Combine your own feelings: When describing a toy, you can combine it with your own feelings. For example, you can describe how happy you feel when playing with a toy, or describe the fun and excitement that a toy brings to you.

6. Describe in a certain order: When describing a toy, you can describe it in a certain order, such as from the whole to the part, or from the outside to the inside. This can make the description clearer and more organized.