We love paint stir sticks. In this case they are slathered in chalkboard paint and labelled with a china marker. The marker won't wash off in the rain but does come off with baby oil, so the stakes are re-markable.
These colorful 'scratch off' plant markers will surely stand out in any garden. See more at Eat Clean Remix.
If you see some steel strapping laying around, you may want to give this idea a try.
Bamboo skewers and corks are another perfect pairing. See the tute at Eat Drink Better.
Getting fancier now....Martha uses stones stamped with dye-based (permanent) ink to make her natural plant markers.
Sort of like Martha's only more refined are these polymer clay stakes from Wit & Whistle.
Old spoons get a new job thanks to metal stamps. Shrimp Salad Circus shows us how to make them.
If you don't have antique spoons, how about forks? The top bit is actually a tin can lid removed using one of those safety lid openers that doesn't leave a sharp edge. Visit Pin and Paper for all the deets.
No forks? No worries. Diane used wire coat hangers (and orange juice can lids) to make her cute plant markers. With the addition of the beads, we're approaching jewelry territory here.
And, finally, we have Craft Jr's pictorial craft stakes. You'll need sticks, raffia, rubber cement or glass glue, clear glass 3/4" aquarium pebbles and this PDF of the veggie pics. The kiddos would love these, no?