Well it's not often we get to see spiders doing things that don't involve catching and eating things, but we shouldn't assume they never do anything else - they most certainly do. Here, we are lucky enough to catch Binky, my sub-adult L. parahybana doing a  spot of tank rearrangement, having noticed that rather too much light for his liking has been getting into his burrow of late. And he's right - having just moved house - I didn't have the curtains up yet, so he decided he'd do something about it in the short term. Clever little guy. So off he goes, and we get to watch his diggy / webby action for a while. Enjoy.