I am also a pre-service teacher and I think your question is a great one to pose. Obviously, we have to first consider the resources available to our students' families. I think it's great to have students do some experiments at home with supplies we 'assume' most households have but we would have to be mindful of these assumptions. Perhaps if you could create packets of supplies to be picked up or dropped off, students could complete some hands-on activities. There are many websites (a few links provided below) that offer fun and engaging activities that are done with easy-to-find supplies.
Also, I would suggest that teachers complete demonstrations for their students. Even though the barrier of the screen may prove to lessen the usual excitement, science demonstrations are still engaging and set up the platform for critical thinking and inquiry.
Finally, though not 'hands-on' in the literal sense, resources such as Minecraft Education Edition and PHET offer ways in which students can explore many aspects of science virtually.
Here is a list of resources that I have found for bringing hands-on experiments home in the remote setting. Hope they can be of some help to you! - Makayla
https://aroundthekampfire.com/2020/03/10-fun-science-lessons-kids-can-do-at-home-distance-learning-activities.html - Use food, make food, watch the growth of plants, and experiment with balloons. This site offers many ways for students to complete hands-on experiments at home.
https://www.curiositymachine.org/challenges/ - Learn through exciting challenges created through common household items.
https://mysteryscience.com/distance-learning - This program is used in many schools as their main science curriculum.