Here are some PTCs that also provide pay-to-read-e-mail(PTE). You will receive several e-mails every day by joining and, each e-mail valids for 10 days and count for $0.01. You may check your e-mail every weekend using only 2 mins and get a few cents. (That is what I am doing).
*For buxif and buxjunction, you may ungrade your account by
using the account balance without investment.
cashcamel (click to join and get $0.1 sign up bonus)
All the PTC above are no investment required
Happy Earning!