Can men make their own dildos?

What are some good dildo alternatives for anal sex? I’ve heard that peeled bananas, cucumbers, and ice cubes (because they melt even if they get stuck) are good. Maybe plungers, because they have a wide base. But are there any alternatives? I still live with my family, so I don’t want them to find out (no shipping costs), and the nearest adult store is far away. Same with condoms. All I can do is wash it or wear gloves

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