None that directly give that feat, no.
Arms & Equipment Guide, a 3.0 book, suggested that a bonus feat should be worth approximately 10,000 gp in item form. This suggestion was not repeated in 3.5, even in the (sort of) 3.5 analogue to AE&G, Magic Item Compendium, and most DMs won’t go for it most of the time. Still, perhaps worth asking.
Other than that, what you’re looking at are shenanigans for extra feats or for rearranging your feats. The Dark Chaos Feat Shuffle (embrace the dark chaos followed immediately by shun the dark chaos) can swap any feat for another, which means that you could take Verminfriend, and then after you have taken the 1st level of arachnomancer, swap it to something you actually want. Psychic reformation can arguably do the same thing.
Those kinds of shenanigans are rarely accepted at actual game tables. Rather you should talk to your DM about possibly waiving the Verminfriend requirement altogether: it’s not as though arachnomancer is a high-power prestige class in need of taxes to balance it out.