Download all a RSS feed and wget all the links for your personal offline reading pleasure. :)

pinget.rb

#!/usr/bin/env ruby
# - encoding: utf-8 -
#
# E.g. with: pinget.rb https://feeds.pinboard.in/rss/secret:YOURSECRET/u:YOURUSERNAME/toread/

require 'rss'
require 'open-uri'
require 'uri'

WGET = ['wget',
        '--recursive',
        '--level=1',
        '--quiet',
        '--page-requisites',
        '--html-extension',
        '--tries=5',
        '--convert-links',
        '--restrict-file-names=windows',
        '--no-parent']

open(ARGV[0]) do |rss|
  feed = RSS::Parser.parse(rss)
  puts "Title: #{feed.channel.title}"
  feed.items.each do |item|
    puts "Downloading [#{item.title}](#{item.link})"
    system(*[WGET, item.link].flatten)
  end
end

Exactly what I was looking for! Thanks!