Use an old Energy or Common Pokmon card that you have extra copies of
Scan your cards, track real-time prices, build decks, and always know what your YGO collection is worth
Climate Control: Humidity and temperature fluctuations can severely damage cards
If you want to build decks based around managing resources and collecting counters, then sign yourself up for Quandrix College
Its material requirements require different Attribute non-Tuners, but don't get discouraged by that, since you want as many different Attributes as you can to boost this card with new effects
There are yet more options that I haven't gone into, such as Traps that change your opponent's monsters' battle positions at any time (like Windstorm of Etaqua or Curse of Anubis), Spells that keep your opponent's monsters face-down (like Swords of Concealing Light), and Monsters that lock your opponent into not being able to attack at all (like Dyna, Hero Fur Hire)