@joshanna My husband travels for work a few times a year and is typically gone for 2-3 weeks at a time and I have a toddler as well.
What we have started doing is before his upcoming trip, we both get the house in tip top shape, like clean enough that you could eat off the floor, everything is dusted, bedding is washed, etc. I feel so much peace when the house is really clean, so getting it to a clean slate before he leaves helps me keep the day to day picking up and spot cleaning doable.
I also do not cook much, and my husband is the main cook in the house. We go on a huge shopping trip prior to his leave and we meal prep until our fridge/freezer/pantry is chock full of meals and ready to go snacks. We have a vacuum sealer for the freezer meals which helps. We make a ton of burritos, curry dishes, egg bites, yogurt, granola for yogurt and snacking, protein bars, prewash veggies/fruit to have in the fridge ready to go, and generally buy things like chicken patties or sausages from Costco for easy and quick meals. We don't have a dishwasher so meal prepping ahead saves me so much time from cooking and washing dishes everyday.
We have a dog that he typically takes for a run everyday during his lunch break (works from home) and it's too cumbersome to do that just myself with a stroller (he has leash aggression issues) so I get him set up for doggie daycare ahead of time. It's expensive but it's so worth it.
I try to avoid scheduling any appointments during travel time unless I have family I know I can rely on to watch my daughter.
My daughter is extremely active and isn't really interested in crafts/sitting in general so my ultimate goal is to keep her busy all day as well. We primarily spend time outside of the house (which helps keep the house clean). We usually go to the library, beach, the zoo, play in the yard, go for long walks, run errands, go to a friend's house, literally anything to get her out of the house. I remember being pregnant and how terribly tired I was, I couldn't imagine doing that with a toddler. If you have friends and family nearby I would try to lean on them as much as possible to help keep your kiddo entertained/give you a break. A few times during his trips I definitely felt like I was drowning and my best friend is an absolute saint and would come over to help me clean my house/hangout with my daughter.
Also, not sure how you feel about tv time, but I definitely rely on Ms Rachel, Bluey, and Octonauts when my husband is out of town. Nothing excessive, but it helps when I need to get laundry and dishes done.
The most important piece of advice I could give is to give yourself a break during all of this. It's not the end of the world if you skip a bath here and there or get behind on keeping the house tidy.
Good luck!