Based on Ferritinmyshoe's post above, I modified my mister system to automatically refill the dripper reservoir. Attached is the diagram of what I did (obviously, not to scale). I always make diagrams before I do anything... Diagrams and spreadsheets
My supplies:
- MistKing Starter Misting System with standard pump and 1 nozzle (already had)
- Little Dripper with standard dripper valve (already had)
- 10-ft 1/4" inner diameter tubing (new, had some from MistKing setup but needed additional line)
- T-connector to split the supply lines (new)
- Adjustable valve to supply water to the Little Dripper (new)
I bought the fittings and extra tubing at Lowes. I spent less than 20$ total. The tubing was a little expensive for what it is since I bought the food-grade tubing. You can get everything from MistKing, too - probably better quality, as the cheap valves do tend to leak at little.
Everything I used has colleted push-type connections. You have to be a little careful with the push connections; if you do not get them seated quite right, they will pop loose when the pump kicks on and flood your living room and your husband will yell at you (true story).
After some tweaking and adjusting the various valves (the supply valve had to be closed just enough to build pressure at the mister nozzle but open enough to fill the dripper reservoir), it seems like 4 minute sessions every 2-1/2 hours is enough to help with humidity (stupid winter) and refill the dripper without overflowing. It did reduce the water volume at the mister nozzle - not an issue for me but something to consider.
As of today, it is working well - much better than I expected

The entire project was very simple. My Jax has always preferred the dripper to the mister, but I'm too short to reach the top of my cage...even with the step ladder. Thanks to Ferret, he can now have both!