Ideas for useful/cute little GUI programs?

[alexeypetrushin]

[b]Nim Activity Monitor / Profiler / Dashboard[/b], attaching to running Nim 
program and showing tabs 1) time chart of total memory usage 2) how much memory 
takes each variable, as [treemap chart](https://plotly.com/python/treemaps/) 3) 
CPU bottlenecks, as horizontal bar chart, showing top 20 procs consuming most 
CPU time.