Summary

Plastic fake bitcoin models that are the same size as real bitcoins have no actual value They are not real bitcoins and cannot be used as money They are simply toys or novelty items that look like real bitcoins but serve no financial purpose You cannot use them to buy anything or trade them for real money Their only value might be as collectibles to people interested in cryptocurrency or bitcoin But even then their value is very limited and depends on what someone is willing to pay for it which is usually not much So if you have a plastic fake bitcoin you should not expect it to be worth anything of real financial value