Need Help and Advice

First of all I would like to introduce myself. My name is Alexandr and I am happy to join the Steampunk community.

My sister makes teddy bears ( handmade ), see the picture below as an example

https://scontent-lhr3-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/10426173_1066034893424283_3358092864816917936_n.jpg?oh=6be49d7e56674682369620fa713f9230&oe=5646C056

Their sizes are 40-44 cm ( 15.7 in- 16.9 in. ) ; sitting- 31 cm ( 12.2 in- 13 in. )

She wants to make some steampunk accessories for them ( mostly goggles, wings, armor ). So I have several questions.

1. Can you recommend me any web stores ( besides Ebay or Etsy ) with steampunk supplies ( preferably in Europe, but can be US based as well )
2. What size of supplies would fit for her bears ( because we ordered some supplies but they are too small ).
3. Do you have any patterns for goggles, what size would you recommend and so on.

Any information would help and I would really appreciate your advises, tips and so on, as we are new to the steampunk world and have a lot to learn.

Thank you