Stumped - Using a 3d printer

When I got my Fused Deposition Modeling 3D printer in late 2017, I was quite excited. The hype had passed, the technology matured, but it was a toy nonetheless.  The excitement faded for the following reasons :

• if you want anything to last, it should be made of stone, wood, fabric, metal or ceramic;
• if it isn't mass produced, you most probably don't need it - pierogie/dumpling maker, custom pasta die, game controller to fit adult hands... all nice to have, but not needed;
• making a die and counter die could be good for casting plaster, aluminum or brass where a the lost foam or PLA casting could be possible. A foundry would thus be necessary;
• Prototyping is certainly cheaper when sketched on a computer and printed, however it's often faster to make a prototype from cardboard, wood, metal, wax, clay, sheets of plastic etc.
  

So where should I go from here? Simple and inexpensive re-purposing of the plastic pumping machine could include :

• PCB milling
• Paper Laser cutting
  
• Plasma cutter attached to carriage
  

If you have any ideas what a consumer 3D printer can really be used for, let me know.