Make Your Own LEGO Valve Steam Caps
Want to make your own LEGO valve stem caps for your full-scale LEGO car? No problem. Take a LEGO block, hollow it out, glue in a regular cap, and PRESTO, some jerk steals them within the first week. Which reminds me, remember when you used to steal the hood ornaments off luxury cars and wear them as a necklace? Well I still do that.
Hit the jump for another picture in case you're dying to know what one looks like on the inside (who isn't?!)
How to make LegoÂ® valve stem caps. [instructables]
Thanks to Katto, who had to make Duplo caps because he drives a monster truck.