Actually, when you look at texts representative of early Jewish and Christian thought, there is not the slightest indication that angels "materialized" bodies. Rather, such texts assume that angels intrinsically have bodies of their own ... their bodies rather have a wholly different nature than physical bodies (i.e. they shine, they exude glory and power, etc.); it is for this reason that resurrected people (who by definition have restored bodies) are compared to angels in the literature. The best example of this is Paul in 1 Corinthians 15 who claims that the resurrected dead will receive a soma pneumatikos "spiritual body" which characterizes all bodies in heaven in terms of being glorious, incorruptible, and immortal. In Hellenistic literature, being bodiless is regarded as being "naked" (cf. 2 Corinthians 5:4), and various pseudepigrapha describe people who enter heaven as shedding their earthly "clothes" and receiving a white robe to wear in heaven (i.e. adopting an angelic body, 2 Enoch 22:8; cf. Revelation 6:22, 7:9-15). In similar terms, with respect to Jesus' own resurrection, various Christian writers took pains to defend the belief in actual resurrection (as opposed to a docetic survival of Jesus' pneuma) by describing Jesus as explicitly embodied though in a different transfigured form (cf. Ignatius, Smyrnaeans 3 who denied that Jesus was asomatos "bodiless" in the resurrection).
One thing the Society seriously misunderstands about early Christian thought is their explanation that the demons (who are bodiless and seek bodies to inhabit) are the fallen angels of Genesis 6 who lost their "materialized" bodies during the Flood (cf. 1 November 1962 Watchtower, p. 648). This is not what early Jews and Christians believed. The actual belief was that the fallen angels were seized by the archangels and detained in an underground prison to await their execution on Judgment Day (cf. Jude 6, which paraphrases 1 Enoch). The demons instead were thought to be their offspring, the Nephilim, who had fleshly bodies thanks to their human parentage but immortal nature thanks to their angelic parentage. When they drowned during the Flood, they became disembodied and thus roamed the earth ever since seeking worship and new bodies to inhabit (cf. Mark 5, where the demons beg to be sent into the bodies of pigs, and yet the pigs drown themselves -- just the same fate the Nephilim had during the Flood). Greek mythology was replete with bodiless gods and demons and the Enochic legend was one means through which the Jews accommodated these Hellenistic traditions (which focused on magic and healing spells) with their native ones.