Answers:
1. Lavabo (sink), toalla (towel), despertador (alarm clock), jabón (soap).
<em>Despertadores</em> can't be found in bathrooms like the rest of these things.
2. Manos (hands), antes de (before), después de (after), por último (finally).
All prepositions except for <em>manos</em>, which is a noun.
3. Acostarse (lie down), jabón (soap), despertarse (wake up), dormirse (fall asleep).
These words are actions except for <em>jabón</em>.
4. Espejo (mirror), lavabo (sink), despertador (alarm clock), entonces (then).
All of these words are nouns but not <em>entonces</em>.
5. Dormirse (fall asleep), toalla (towel), vestirse (get dressed), levantarse (get up).
<em>Towel</em> is the only noun here.
6. Pelo (hair), cara (face), manos (hands), inodoro (toilet).
All body parts but not <em>inodoro</em>.
7. Espejo (mirror), champú (shampoo), jabón (soap), pasta de dientes (toothpaste).
Every word is related to cleaning the body, except for <em>espejo.</em>
8. Maquillarse (put make-up on), vestirse (get dressed), peinarse (brush hair), dientes (teeth).
All actions except for <em>dientes</em>.
9. Baño (bathroom), dormirse (fall asleep), despertador (alarm), acostarse (lie down).
These are all related to sleeping except for <em>baño</em>.
10. Ducharse (take a shower), luego (then), lavarse (clean up), bañarse (take a bath).
<em>Luego</em> isn't an action like the rest of these words.