Eep. Long years ago, Sir Terry posted that he was convinced he had read a book titled "101 Things A Boy Can Do" but he couldn't find it anywhere. I just did a websearch and found a listing for this:
The Fix-It Book - by Arthur Symons - 1967 - Revised from his 1961 book "101 Things a Boy can do Around the House"
I don't know whether the original includes everything in the revised version, but the revised one includes plumbing. Plumbing is mentioned in Pyramids, and replacing a faucet washer is simple enough for a reasonably capable young person to do.
The Fix-It Book - by Arthur Symons - 1967 - Revised from his 1961 book "101 Things a Boy can do Around the House"
I don't know whether the original includes everything in the revised version, but the revised one includes plumbing. Plumbing is mentioned in Pyramids, and replacing a faucet washer is simple enough for a reasonably capable young person to do.