Email to email@example.com uploads attachment to Drive
Create a 'drive' label in gmail. Create a filter so that an email sent to 'firstname.lastname@example.org' gets the label 'drive' (note: substitute username with the portion of your email address before the @ symbol. But you must add '+drive' to it. So email@example.com becomes firstname.lastname@example.org, which still goes to the same address.) Then let IFTTT take the attachment and send it to Drive for you in the THAT part of the Applet!