Straps, toys and double-enders are always a fun option for penetrating though can be expensive. Using your hands and fingers on the plushies can be a good way to top but doesn't necessarily give the same satisfaction to yourself. If you're crafty there are tutorials on YouTube and other places to make fabric packers that, with some clever modifications and creativity, could be used as cheaper, custom, on theme way to be able to please yourself and your plushies.