The illustrations contain many other objects beginning with that letter that the reader can try to identify (however, there are not necessarily "a thousand things, or maybe more", as the author states).
ðɪ ˌɪləstɹˈeɪʃənz kəntˈeɪn mˈɛni ˈʌðɚɹ ˈɑːbdʒɛkts bɪɡˈɪnɪŋ wɪð ðæt lˈɛɾɚ ðætðə ɹˈiːdɚ kæn tɹˈaɪ tʊ aɪdˈɛntᵻfˌaɪ haʊˈɛvɚ, ðɛɹˌɑːɹ nˌɑːt nˌɛsɪsˈɛɹᵻli "ɐ θˈaʊzənd θˈɪŋz, ɔːɹ mˈeɪbiː mˈoːɹ", æz ðɪ ˈɔːθɚ stˈeɪts.