I always thought of the meditation as the easiest thing one could do because it doesn't necessarily require getting things. But there really are tons of things you could do... you could cast a spell that they would be involved in, create an altar space and place an offering, create something like a charm, talisman, craft, painting, poem, prose... use your imagination. Do a tarot spread (or preferred divination method) with them where you create a spread to get to know them. You could also use gardening for some, bless a space in nature for others, go to a local wildlife refuge and visit some of their preferred animals, possibly donate to them if you had the means, find other ways to honor their animals (like Lady Lilyth gives apples and such to the local deer for Artemis). We want you to feel a connection to the gods you are working with. You don't have to promise each one that you will keep up a relationship with them, let them know you are in the process of meeting several deities. Yes, some will want more from you, but not all of them. Also, know that they don't all answer in the same way. Some will talk, some will put images in your mind, draw your attention to different details, and some will appear in dreams. Some, you will just feel a presence. Some may not be very overt in their responses and you really have to concentrate to figure out what they want you to know. Divination techniques like cards, runes, and pendulums can be very helpful with communication. Divination taps into your higher self who can communicate directly with them, but can't communicate well with your waking self, so using the younger self uses imagery and intuition to convey the ideas the deities present.

Xandria has some good ideas here.

The purpose of these exercises is to learn about deities in a polytheistic practice. You do not have to have a full relationship with them but youc an begin with easy and small things, letting them know you are working on your path and that you chose them to learn more about for this lesson. You can also include that as a part of this you choose a new one each lesson and that you may not reach out to work with them for a while or at all. When we respectfully share why we are reaching out, we are not only sharing with them but enforcing that thought with ourselves. It can be a bit of a yo-yo feeling when we delve deeply.

Not every ineraction will be answered and not everone will be as deep as some. Some of them will want to work with you later and they will let this be known for you.