The sub $1 altcoins in my portfolio are;
RPX
QSP
CND
REQ
SUB
EMC2
VEN
LINK
MER
ENG
SYS
XSPEC
ZRX
VOX
SIGT

There are lots of promising cheap alts but can only buy so much.  There are probably another 10 I want to invest in if I have the funds.

Good luck!