body: I'm an engineer and I wanted to make a toy for my 3 year old daughter for Christmas. She loves Little Einsteins but since that was 12 years ago, they don't really make many of the toys anymore. Any that are still available are held by collectors and sell at a premium ($100+ for a smaller one).
  
  
  I wanted to make her Leo's baton as that is her favorite character. I have a 3D printer and making something like that won't be an issue. My idea is making something that resembles it physically but not identically and has a few buttons that will play a couple of soundbites from the show when pressed (the baton on the show does not do that). It won't have any logos, iconography, or anything tying it to the show on the outside.
  
  
  If it's a legal issue, I can just change the soundbites to something generic but it would mean more to her for it to be a Little Einsteins thing. Will the physical likeness itself be a possible enfringement?
  
  
  This isn't something I would be selling or making money off of and since they aren't produced, the toy isn't easy to come by.
  
  
  NB: if I'm not stepping on any toes and make it as described for my daughter, could I document the build and put it online (a blog or social media)? Could I share the 3D model\* on a website under the Creative Commons License (no money or anything is gained)?
  
  
  I'm sorry if this seems like a dumb question, I'm not familiar with copyright law and I don't want to get myself in any trouble.
  
  
  
  
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  \*Models are required for 3D printing
  
  
  
title: How different does something have to be so it doesn't infringe on a copyright?