Currently, you can buy aghs, place your webs, and then sell it again. The webs do not disappear upon losing the item, so you can have up to 20 webs on the map even without aghs.

This is also abusable with Io.

Upon losing the aghs, the oldest webs should get destroyed, so that you are back to the default limit of 2/4/6/8 webs.

Same goes for max charges. Upon losing aghs, you keep all extra charges.