If you’re confident with a soldering iron it can be done relatively easily
A good start point would be to get a long mono 3.5mm to 3.5mm cable, half it and then solder them to a 6.25mm TRS jack plug
2 x earth to TRS earth
one tip to TRS tip
one tip to TRS ring
Discussed a bit in this thread and in others
The Elektron connection kit is great too, if you give in and elect to buy