For reference,
from top 50 Kanjis in top 10,000 firmily names.
http://www.ipc.shizuoka.ac.jp/~jjksiro/kensaku.htmlanimal-related:
(o/bi; tail), (kuchi; mouth)
adjectival:
(yasu; cheap/safe), (hira; plain/safe)
v(hisa; long-continued), i(naga; lasting/eternal)
(hara; field/original/primitive), {(moto; root/original), (moto; beginning/original), (ne; root)
(fuku; blessing), g(yoshi; good), _(kami; god)
(kane; gold/money), (shiro/shira; white), (aka; red)
(ue; upper), (taka; high), (oo; big), (naka; middle), (ko; small)
V(nii; new), (furu; old/aged), (ima; now/present)
BTW, if your first name is (ai; love), I can recommend (ueo; upper tail) for your last name.(^-^
(ooo; big tail) is very funny, I love this.(lol
Of course, those Kanji are just for example.