Peace be upon you. According to Grand Ayatollah Khamenei and Grand Ayatollah Sistani (may Allah protect them), it is not permissible for spouses to enjoy anything other than each other's bodies. The evidence for this cannot be detailed here as this platform is not intended for in-depth discussions of jurisprudential proofs. However, it can be summarized that the religious evidence permits enjoyment between spouses solely through their bodies, and there is no evidence to support anything beyond that. May you be successful in all good.