A fellow gardener and I were discussing plant tags, plastic or wood? I label seeds I have planted in the greenhouse or plants in pots, but I don't put the labels in the garden. I usually can remember what went where or I draw a map. As long as no one else tries to do any gardening it's not usually a problem. For my tags I like to cut up plastic milk jugs to make my plant labels, but since we don't drink milk out of plastic jugs at home we have to acquire them some where else (family members).
You can buy the plastic tags at a store (they work great), but who wants to spend the money. This is just the place for my motto "I can make that", I don't like using plastic that much, but I figure I am adhering to one of the three "R's", REUSE!. I always use both sides of the tag and recycle the plastic when I am done.Many gardeners do like to put labels in the garden though (it makes sense doesn't it). I do understand that if you put plant labels in the garden you wouldn't want the plastic tags everywhere because you would have to pick them up at the end of the year (hunt for the plastic tag game), so cardboard tags will work for the season (the do get lost easy), or those large craft tongue depressors work great, they're wide to give you plenty of room to write those long plant names.
The wood and the cardboard will just grind up with a pass of the tiller or mulch into the soil when you put you garden to bed for the season. (Of course that's not grass you see growing in my garden rows, you must be imagining things)
We did had a little fun earlier this year making decorative garden signs. My mother is the artist who panted plants pics on Fir rounds that Ty cut from the back pasture and stakes he split from some fire wood. TY then screwed the round to the stake (nailing it will split the wood), then he sanded the surface of the round just a little to make it easier to paint. After it was painted we then sprayed a sealant on it to protect it from the weather. I think they turned out really neat and would make a fun project for older kids. Now if we can only keep the dogs from pulling them out and chewing them up.
Well off to re-pot tomatoes. Remember, "someone made it, why not you".