The Broken Earth series, Enders game series (the first 5 books about Ender), American Gods, An Absolutely Remarkable Thing and the follow up A Beautifully Foolish Endeavor, The Kingkiller Chronicle (we’ve been waiting 10+ yrs for the final book 3, some folks are pretty irked atp, but it will be ok). If you want YA beach reading, anything by Seanan McGuire / Mira Grant for easy fun books about fairies, cryptids, and zombies.
Could you build a wood racecar like they use in the soapbox derby? I saw plans online, the kits are a couple hundred USD, but you might be able to build a cheaper one from scratch…