i was thinking something more like this than logistic bots
https://www.factorio.school/view/-L_ZtOgC1oTdUD6qDxAy
i remember grabbing something like this a few versions ago and hacking it to work with the inventory combinator mod to automatically refill everything incl the trunk
lost that blueprint ...

idk how feasible this is, but i just had an idea about the spidertron
currently, afaik, there is no way to automatically fill it with items, because it floats above all machinery in order to walk over it
however, if it is not used for a certain amount of time (or perhaps only on manual request), it ...