On bicycle tire tubes that get a small hole such as from cockleburs, is it wise or easy to repair the tube?

On bicycle tire tubes that get small holes such as from cockleburs, is it wise or easy to repair the tube instead of replacing it? If yes, is there a good do-it-yourself kit? Which ones and what is the approximate cost? Will putting superglue or some other type of glue on the hole in the inner tube work?
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