As there is very little feedback about the competitions before they are posted and I am running out of inspiration, I wonder if you regulars are willing to post comments or edit into this question what theme you would want for the July competition. Before the start of the month I will edit this question with the normal competition information and adjust the header to the theme decided on.
As usual, you can post in the chat instead.
This question did not work as I expected, I am going to leave this one open for a while longer and take one of the answers for the July competition. (A few more days before I am going to post it.)