There are many options here. However, you really want to think about how you want students to turn in their work. If you're not careful This could turn into a disaster and totally fill up your email inbox. Below you will find two different approaches to how to handle this. There are advantages and disadvantages to both. So ultimately you'll have to decide which you will use for a particular assignment.
Google Forms
Create form with fields for:
Name: Last, First
Drop Down for hour
Assignment Title (only really need if you're going to use one form for all assignments)
Link
Students should also email their link to themselves
At the beginning of the hour email the link to your form to dcipadcart@divinechildhighschool.org
CC to their own email address
Hour Number, Last Name, Keyword
If this is a collaborative work put the other names in the body of the email
Set up Filters in Gmail to put emails into a folder
Create a Filter for iPad Assignments - filter for From: dcipadcart@divinechildhighschool.org
Nest Filter for specific assignment under it - filter for Subject: Keyword
Can then simply sort by subject
Can “Archive” all the conversations to get them out of the way