these washing up bowls may not strictly be designed as bathroom storage but thanks to the draining holes they'll do the trick nicely...use the draining bowl to scoop and lift the toys out of the bath, pop them in the non-holey bowl, et voila! (nice price too)
ikea boholmen washing-up washing up bowls bath toy storage draining white plastic cheap nicely designed
boholmen washing-up bowl and rinsing basket, £8.99, ikea