2: a display of local North East Victoria, Australia insects put together by Insectographs
3: a butterfly collection from the New York Botanical Gardens shop
4: Bug Under Glass' Etsy shop
Is there an entomologist in you? Here's a how-to on collecting local specimens yourself at the R. M. Bohart Museum of Entomology at UC, Davis. Note that permits are required in many locales, so research before starting a collection on your own.