I have several projects using TouchOSC This one allows you to select a range of live loops and start and stop them at will There are references back to In Thread and a video of it in operation. I have just updated it to run on Sonic Pi 3.31 and 4 or later.
The second one is a midi file player allowing you to choose and different Sonic Pi synths
The third one is a sequencer which lets you record and playback.
A fourth is a Record/Player with its own note input interface together with synth selection.
However the published software for this needs updating for latest Sonic Pi versions. I have done the upgrade but haven’t had time to update it online yet. The video of the project is here