I'm sure most of us are already aware of most of these but I thought many beginners might not be. Here are a couple: If you want a chai stay protector there are plenty for sale but you can make a great alternative yourself by using an old inner tube. Make a paper template and use it to cut the item. Secure with contact adhesive. You might have a shaped chainstay as I did where it's especially useful. Cost is zero. You could also wrap the stay in a strip of tubes if you wish. There are many other uses for old inner tubes like ties for luggage or whatever, I'm sure others will make suggestions. If you haven't got a pair of needle nose pliers separating a chain with a quick link can be a pain. An effective alternative is to use a length of wire or even a shoe lace to pull the ends and break the link. A chain holding tool can be simply made from a length of old wire coat hanger. Useful for when you need to join or measure the chain.