Avid toy fan however over the years I’ve ended up with toys that are just too big for comfortable anal play. The feeldoe classic is just about right but I have the Tantus P spot and the Blush D3 that just won’t fit!
Any suggestions before I attempt to modify them 
Do you have any partners or close friends that if you cleaned them up would feel comfortable giving them to? That’s usually what I’ve done with a toy that doesn’t work for me.
Or I keep them to use on partners as backups. That said, you could def. modify or use them in a different way! Just using them to grind against, not fully inserting, teasing around the anus, all ways you can use a toy without insertion.