Question: Any tattoo suggestions for the below areas?

I am in the process of getting this frog tattoo on my right arm. I am getting it finished in March (coloring in the frog and mushroom) and I’m so excited to have it done! After, I want to kind of finish up this arm by filling in the empty space, but I’m not sure what to fill it with. The only other tattoo I have is a small mountain range, partially shown in picture 2.

The only idea I have so far is to have a spaceship pulling up a cow out of the mountains, and maybe incorporating stars and planets so that the frog is also smoking under the night sky. This wouldn’t help for all the space to the left of the frog though, just the right. Any other suggestions?