Godzilla toys are some of the most fun to Photoshop into backgrounds. Some of the Japanese vinyl figures have awesome details that look wonderfully realistic. But you can't just plop the figure into a random background image. To look integrated into the background, you have to take the photograph of the Godzilla outside. Also, for the figure to look unimaginably huge like the "real" Godzilla, you have to add numerous atmospheric effects. It's a pain-staking process and surprisingly difficult to render perfectly.
Star Trek: The Next Generation was an early 90's line from Playmates that arguably initiated the collectible action figure market with its collector-centric marketing strategy.
Rocks & Bugs & Things was a toy line released in 1985 by Ideal. The basic premise was that seemingly harmless rocks and bugs would suddenly and viciously transform into horrible monsters, ambushing innocent little mordels and eating them alive! Shown above is Rockadile. Other rocks available included Bloodstone, Trapasaurus, Shriekbeak, and Gravelguts. The bugs available in the line were Evil Beetle, Scarepion, Wicked Cricket, Blooderfly, and Terrorantula.