If these plants were attached to driftwood sticking out of a planted bowl, what would you recommend for watering and fertilization? Water from the bowl would be my best choice, since it's handy and fertilized ... would that be sufficient? Trying to figure out if I could do that without making a mess!
Bowl water should work just fine. The fertilizer concentration will be much lower than recommended, but you'll be "fertilizing" with every watering.... Just keep an eye on them. By the way, you can glue tillandsias to your driftwood without harming them. Silicone epoxy works well.