Here is a marker I use for vegetables and bushes- The correct name for the pans I cut up for their aluminum is rectangular foil cake pans and also roasting pans. I googgled the dollar store bulk and that�s what they call them. The aluminum they are made of can be embossed with a ball point pen. Below that listing was a place called At Party City that had a product called alum. full steam pan lid that looked even better [no lines] if they are thick enough ? Perhaps catering companies have used ones they just throw out, I have found some nice material after our weekly pot luck dinners, lasagna pans and pie pans. . I just run them thru doggie preclean and then thru the dishwasher�good enough for plant markers. One other thing I used a sharpie marker to highlight the embossed letters for the picture, I doubt that it would last long in the garden, but the embossing lasts for years.

Dave

PS: You could have just added this to your previous post on this. That keeps all the info together for all to see. No need for a new thread.