A built-in scope display would be nice. Like this $10 module.[1]
Then you could use this standalone. They charge EUR 499 for the thing, after all.
The way you usually run an analog computer is to put it into fast repeat mode (which they call REPF), where it cycles between initial condition mode and run mode. Outputs go to a scope. Then you can twiddle the knobs and see the output respond immediately.
The other modes are used mostly during setup and debug.
Hours of fun. Ages 14 and up.
[1] https://www.alibaba.com/product-detail/YIXINTAI-DSO138-Digit...