If you love to go green and perform DIY recycling projects at home, then you might be interested to check out this particular Instructable that will see you breathe new life into old RJ-45 plugs. What you will need would be some network cable, male RJ-45 plugs, colored rubber protectors for the RJ-45 plug, as well as enough key rings to go around. You will need to form the key chain using a RJ-45 plug crimper, a pair of scissors as well as a cutting or sleeving tool.
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RJ-45 keychain rack for recycling fans