What do you do secretly to surprise your SO???

I'm planing on buying anal beads and a vibrator to get myself more comfortable with anal bc my bf wants to do it again but last time hurt so bad bc we didn't use enough lube and I bleed so I'm going to secretly get myself ready then just tell him to do it or let him play with it on me. I think it'll be fun since we are kinda on a break from ttc since our finances aren't as stable as we'd like at the moment so why not just have fun?